根据录音,选择合适的答案() 查看材料
A. Water steam will blast out of the tap.
B. Hot water will flow out of the tap.
C. Hands will get burnt by the hot tap.
D. Gas in the tap will cause explosion.
What does the phrase "back into the black" (Line 4, Para.2) mean?
A. Repay all their mortgage.
Become depressed again.
C. Back into a profitable state.
D. Get their houses back.
有丝分裂过程中细胞核增大,DNA含量倍增是在()。
A. 间期
B. 前期
C. 中期
D. 后期
E. 末期
mRNA的前体转录产物称为()。
A. snRNP
B. hnRNA
C. rRNA
D. tRNA
E. mRNA