题干

下表为某同学探究“温度对黄粉虫生活的影响”的实验设计,但还不够完善,下列对其修改正确的是(  )

位置

黄粉虫

光照

温度

湿度

纸盒左半侧

20只

明亮

15℃

适宜

纸盒右半侧

20只

阴暗

30℃

适宜

A:左右两侧黄粉虫的数量可以不同

B:左右两侧都应保持30℃

C:左右两侧都应保持在阴暗环境中

D:左右两侧可以湿度不同

上一题 下一题 0.0难度 选择题 更新时间:2017-02-15 02:01:44

答案(点此获取答案解析)

C

同类题2

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    I got out of the train station with my father. A woman came to him and said that her money had been stolen(偷). She asked if he could  1 her some money to go back home. My father gave her what she asked for and told her not to worry about paying it back. I was  2  . How could my father be so silly? Anyone could see that she was telling a lie(谎言), staying at the station all day long  3  for money.

    "She was lying!" I said."  4  did you give her the money?"

    My father looked at me. He was a bit angry. "And what would you like me to do?" he said.

    "Should I tell her that I am a college professor and I can see through her scam(骗局)?" I did not  5  his meaning at all, and then he told me something that I have   6   forgotten. "First, she would not do this  7  she didn't need the money. Second, I made her day, because now she thinks that she's  8    than me. It is more important to  9  than the money. but I don't mind this."

    A week later, we were at the same station, and the same woman came to my father with the same story. "Not this time," my father told her. "In your business, you should learn to recognize(认出) people. Try another  10 on me next week."

21 A. borrow    B. keep    C. lend    D. pay

22 A. excited    B. angry    C. sad    D. surprised

23 A. asking    B. looking   C. waiting   D. going

24 A. Where    B. When    C. Why    D. How

25 A. find    B. know     C. hear    D. believe

26 A. never   B. sometimes    C. always   D. usually

27 A. because   B. until    C. as    D. if

28 A. smarter    B. younger C. taller    D. better

29 A. them       B. her    C. you    D. me

30 A. coat    B. story    C. station   D. man