问题 -

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1.[单选题]Some insects disguise like natural objects so as to ______

A.frighten away their enemies

B.avoid being discovered

C.send warning signals

D.look bitter-tasting

2.[单选题]Insects can be found in large amounts in the following places EXCEPT _____.

A.on the mountains with little air

B.in the cold polar areas

C.in the hot desert areas

D.n the open oceans

3.[单选题]Insects protect themselves from chemicals by _______

A.hiding in tiny spaces

B.having a strong shell

C.flying away when necessary

D.changing colors or shapes

4.[单选题]The passage is mainly about ______

A.how insects survive in different places

B.why insects can survive so successfully

C.what insects can do to the environment

D.where insects can be found in quantity

5.[单选题]The passage mentions that insects ______.

A.can be found in any extreme environments

B.have survived longer than any other creatures

C.can be fed on any natural or man-made foods

D.are important for the growth of crops and flowers

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Single-sex education is the practice of conducting education where male and female students attend separate classes in separate schools. The practice was predominant (突出的) before the midtwentieth century, particularly in secondary education and higher education. Single-sex education is often advocated on the basis of tradition,as well as religious or cultural values. It is practiced in many parts of the world.
style=color: rgb(51, 51, 51); font-family: "Microsoft YaHei"; white-space: normal; background-color: rgb(250, 250, 250);/ A number of studies starting in the 1990s are showing statistical data that children from single-sex schools are outperforming students from coeducational (男女同校的) schools,although some studies also say that these are non-conclusive. In 2002, because of these studies and bipartisan (两党的) support, the US law of 1972 that made coeducation in public schools mandatory was revoked and funding was given in support of the single-sex option. There are now associations of parents who are advocating for single-sex education.
style=color: rgb(51, 51, 51); font-family: "Microsoft YaHei"; white-space: normal; background-color: rgb(250, 250, 250);/In some cases, parents are now making the decision to send their child to a single-sex schools for the following reasons.The first one is the teacher-student ratios are typically much higher in the single-sex schools because in most single-sex schools there are smaller class sizes. Secondly, parents and students are often choosing a single-sex learning environment because they think with good reason that their child or themselves will receive a better education. International research has shown that boys and girls perform best when they are taught separately in their teen years.
style=color: rgb(51, 51, 51); font-family: "Microsoft YaHei"; white-space: normal; background-color: rgb(250, 250, 250);/ Critics of the single-sex education argue that segregated learning facilities are inherently unequal. System bias will reinforce gender stereotypes and perpetuate societal inequalities in opportunities afforded to males and females. Single-sex schools in fact accentuate (使……突出) gender-based educational limitations and discrimination. Boy's schools may not offer home economics classes, while girl's schools may not offer metalwork, woodwork or as wide a variety of sports.
style=color: rgb(51, 51, 51); font-family: "Microsoft YaHei"; white-space: normal; background-color: rgb(250, 250, 250);/ Some children like larger classrooms. These larger classrooms give them more competition and can even make some students more motivated to work harder. When there are more children in a class people may think children can get lost, but some students think of it as something that pushes them to work harder. Although this statement is the opposite of a single-sex school advantage that was listed above, this is just further proof that it all depends on each child and that each children quires a learning environment best for her/him.

1.[单选题]Which of the following is held by the opponents of the single-sex education?

A.Students in each class in most single-sex schools are fewer.

B.Students in a single-sex school can't broaden their horizons.

C.Students perform badly by learning separately in their teen years.

D.Segregated learning will further deepen gender discrimination.

2.[单选题]The word "revoked" (Line 4,Para.2) most probably means __.

A.supported

B.abolished

C.provoked

D.passed

3.[单选题]The author's attitude towards the single-sex education is __.

A.positive

B.subjective

C.negative

D.objective

4.[单选题]According to the first paragraph, what do we know about single-sex education?

A.It segregates males and females in the same school.

B.It began from the mid-twentieth century.

C.It was once overwhelming in secondary education and higher education.

D.It separates itself from tradition,religious and cultural values.

5.[单选题]What can be inferred from the last paragraph?

A.It's children themselves that know clearly about their condition.

B.Parents always like to make the decision for their children on their will.

C.Single-sex education fosters ignorance and prejudice towards the other gender.

D.Some students prefer to larger classes for its competitive atmosphere.

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假设某投资者持有A、B、C三只股票。三只股票的β系数分别为1．2、0．9和1．05，其资金分配分别是100万元、200万元和300万元，则该股票组合的β系数为（）。

A1.025

B0.95

C1.5

D0.85

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基差变小，称为走弱（Weaker)。基差走弱常见的情形有（）

A现货价格涨幅大于期货价格涨幅

B现货价格涨幅小于期货价格涨幅

C现货价格涨幅等于期货价格涨幅

D现货价格跌幅不超过期货价格跌幅

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5月8日，某套期保值者以2270元／吨在9月份玉米期货合约上建仓，此时玉米现货市场价格为2100元／吨，则此时玉米基差为（　）元／吨。

A-170

B1700

C170

D-1700

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1.[单选题]How does the author evaluate the generalizations of people’s types in Para. 3?

A.Such generalizations help us judge the different characters of people we meet

B.Such generalizations are not inclusive enough to draw a convincing conclusion.

C.Such generalizations prove that nature plays an important role in determining social habits.

D.Such generalizations show that there are mainly two different types of people on the planet.

2.[单选题]What do we know about the generalizations of people’s type?

A.What do we know about the generalizations of people’s type?

B.People who live in mountain areas tend to have a long life.

C.People who live in areas with stable climate tend to be talkative and lively.

D.People who like drinking cow blood tend to be strong and tall.

3.[单选题]The author’s purpose of writing this passage is to______.

A.alert readers to the scarcity of natural resources

B.call for more research on the influence of geographical environment

C.introduce different elements in character cultivation

D.draw more attention to the health condition of mankind

4.[单选题]According to the passage, research into the influence of climate and geography should ____.

A.focus on unknown aspects

B. be pursued on a larger scale

C.be carried out among remote tribes

D.go ahead in depth

5.[单选题]It can be inferred that proper amounts of iodine, fluoride and calcium can_____.

A.benefit people’s physical health

B.influence the quality of water supply

C.help provide breeding places for pests.

D.strengthen a person’s character

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在基差交易中，卖方叫价是指（　）。

A确定现货商品交割品质的权利归属卖方

B确定基差大小的权利归属卖方

C确定具体时点的实际交易价格的权利归属卖方

D确定期货合约交割月份的权利归属卖方

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