自有生命以来,地球所处的宇宙环境是相当稳定的。下列有关其所处

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问题选择题

自有生命以来,地球所处的宇宙环境是相当稳定的。下列有关其所处的宇宙环境稳定原因的说法,错误的是

A．太阳光照条件较稳定

B．八大行星的公转方向相同

C．地球的体积和质量适当

D．八大行星的公转轨道面几乎在同一平面上

答案

答案：C

题目分析：地球所处的宇宙环境主要是指宇宙间地球与其它行星之间的公转方向、轨道、距日远近等。A、B、D符合题意，正确，C地球的体积和质量则是地球的自身环境，故错。

阅读理解

阅读理解。

My name is Jeff. I'm English. But now I live (住) in China. I am a student. This is my classroom. Fifteen

small desks and thirty chairs are in the classroom. They are for (给) classmates (同班同学) and me. A big

desk is in the classroom, too. It's for my teacher. A clock is on the back (后面) wall of the classroom. Next

to the clock is a map. It's a map of China.

My classroom is nice and clean. I like it very much.

1. Who is Jeff?

A. A schoolboy.

B. A schoolgirl.

C. A Chinese student.

D. American.

2. What is Jeff talking about?

A. The family.

B. The school.

C. The classroom.

D. The park.

3. What's on the back wall of the classroom?

A. A clock.

B. A map.

C. A map and a clock.

D. A picture.

4. How many desks are there (有) in the classroom?

A. Fifteen.

B. Sixteen.

C. Thirty.

D. Thirty-one.

5. What does the underlined (划线) "it" mean (意思) in the passage (文章)?

A. The classroom.

B. The map of China.

C. The big desk.

D. The school.

单项选择题

X公司年末“应收账款”科目的借方余额为100万元，“预收账款”科目的贷方余额为150万元，其中，明细账的借方余额为15万元，贷方余额为165万元。“应收账款”对应的“坏账准备”期末余额为8万元，该企业年末资产负债表中“应收账款”项目的金额为______万元。

A．165 B．150
C．115 D．107