The skin, an ____ part of your body and its largest organ, ____ as a barrier aga
题型：同步题难度：来源：
| The skin, an ____ part of your body and its largest organ, ____ as a barrier against diseases. |
| [ ] |
A. vital, acting
B. vital, acts
C. essential, acting
D. essential, acts |
答案
| D |
举一反三
| When we plan our vacation,mother often offers________suggestions. |
| [ ] |
A. careful
B. practical
C. effective
D. acceptable |
| This naughty boy is really________, which makes his mother upset. |
| [ ] |
A. attractive
B. active
C. troublesome
D. anxious |
—How did you like the lecture tonight?
—Very________.I doubt if I will come to this kind of lecture next time. |
| [ ] |
A. encouraging
B. encouraged
C. disappointing
D. disappointed |
If you have to catch the first bus every day,choose this hotel.It is very________for the station-it"s only a
two-minute walk. |
| [ ] |
A. close
B. certain
C. convenient
D. distant |
| Facing starvation as a result of drought, they had no ________ but to eat the roots of the trees. |
| [ ] |
A. concern
B. command
C. shortcoming
D. alternative |
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