同位素示踪技术是生物学研究中常用的手段，如果仅要求标记生物细_爱下问搜题

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问题选择题

同位素示踪技术是生物学研究中常用的手段，如果仅要求标记生物细胞中的核酸，而不标记蛋白质，应标记的同位素是[ ]

A．¹⁴C

B．³H

C．³²P

D．³⁵S

答案

答案：C

完形填空

完形填空。

    On Sunday morning, I usually get up very late. I wash my face and then go out
to   1   morning exercises. It is about 8.20 a. m. After I eat my breakfast, I often go
to a shopping centre   2   my mother. The shopping centre is near our home, so we walk
there. It   3   us about 20 minutes to get there on foot. The shopping centre has a good
name. It is called "新世纪购物中心" in Chinese. It doesn't have an   4   name. Can you
help to put it into English? It is new   5   big.   6   many things there, such as (诸如)
TVs, fridges, bikes, computers, clothes, books, food and drinks. There are many people
there. There are men and women, old and   7 . Parents must   8   their children. The
shopping centre is so big. Young children may get lost (迷失) in it.   9   do many people
come here to buy things? Do you know? Let me tell you. The things there are usually good
and  10 . The workers there are always nice and friendly. If (如果) you come to my home,
I can take you there and have a look.

( )1. A. make
(    )2. A. for
(    )3. A. makes
(    )4. A. old
(   )5. A. but
(   )6. A. There is
(   )7. A. tall
(   )8. A. look after
(   )9. A. What
(   )10. A. expensive

B. do
B. to
B. takes
B. big
B. with
B. There are
B. short
B. look for
B. Who
B. cheap

C. run
C. with
C. plays
C. English
C. and
C. They are
C. young
C. look at
C. Why
C. big

D. play
D. of
D. cost
D. French
D. or
D. They're
D. small
D. look like
D. When
D. new

多项选择题

预计负债计量需要考虑的因素有（）。

A.风险和不确定性

B.货币时间价值

C.可能影响履行现时义务所需金额的相关未来事项

D.预期处置相关资产形成的利得