正确答案:

题目：(六)大气圈是自然界最活跃的组成部分。在不同的大气分层中，演绎着各种自然现象。

解析：B

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举一反三的答案和解析：

[单选题]34 with Father’s Day around the corner, I have taken some money out of the bank—— presents for my dadA buy

to buy

[单选题]For these reasons,I believe that lawmakers need to legislate (立法) against spam.Spammers should be fined,and perhaps sent to prison if they continue to disturb people.E-mail is a tool which helps people all over the world to communicate conveniently,but spam is destroying this conwenience.57.What does the underlined word “correspondence” in the Paragraph 1 probably mean?

messages

解析：

D

【文章导读】随着网络信息技术的发展，越来越多的人们实用网络邮箱来传递信息，但现在垃圾邮件的泛滥已经成为网络用户们深恶痛绝的事情，人们呼吁立法来阻止垃圾邮件的泛滥。

. A。【解析】词义猜测题。根据本文中的e-mail一词以及endless series of advertisements可以推断出correspondence在此处意思是：信件，垃圾邮件，由此可知本题选A。

[单选题]51

dropped

[单选题]-I’ll do the washing-up. Jack, would you please do the floor?-

Yes sure D． no not at all

[单选题]BHaving a husband means an extra seven hours of housework each week for women, according to a new study. For men, getting married saves an hour of housework a week. “It’s a well-known pattern,” said lead researcher Frank Stafford at University of Michigan’s Institute for Social Research. “Men usually work more outside the home, while women take on more of the housework.”

is the main breadwinner D． is the master of the house

[单选题]

B． Therefore C． Besides D． Finally

HoweverB． Therefore

[单选题]侧根是维管形成层产生的。( )

错误