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【單選題】

營腐生生活的細菌和真菌在生態(tài)系統(tǒng)中占有重要地位,這主要因為它們( )

A.
能釋放氧氣和吸收代謝廢物
B.
能凈化環(huán)境
C.
能分解有機物使之變?yōu)闊o機物,歸還到無機環(huán)境中
D.
能為其他生物提供食物來源
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參考答案:
舉一反三
【單選題】What did the woman do last weekend?
A.
Went for a picnic.
B.
Went camping.
C.
Went to a gym.
【單選題】When you join a large beach volleyball team, you’ll_________.
A.
have as many shots as possible
B.
improve your volleyball skills
C.
be responsible for more ground
D.
feel light-hearted(輕松)while playing
【單選題】What does the writer think of beach volleyball?
A.
It is a difficult sport to learn.
B.
It is a very exciting and interesting sport.
C.
It is a sport which needs less power.
D.
It is a sport which needs more skills.
【單選題】Only in this way _______ the problem.
A.
can you solve
B.
solve you can
C.
you can solve
D.
do you can solve
相關題目:
【單選題】What did the woman do last weekend?
A.
Went for a picnic.
B.
Went camping.
C.
Went to a gym.
【單選題】When you join a large beach volleyball team, you’ll_________.
A.
have as many shots as possible
B.
improve your volleyball skills
C.
be responsible for more ground
D.
feel light-hearted(輕松)while playing
【單選題】What does the writer think of beach volleyball?
A.
It is a difficult sport to learn.
B.
It is a very exciting and interesting sport.
C.
It is a sport which needs less power.
D.
It is a sport which needs more skills.
【單選題】Only in this way _______ the problem.
A.
can you solve
B.
solve you can
C.
you can solve
D.
do you can solve
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