Who will be glad to see that stunning waves？
A. Fishermen
B. Scientists
C. Tourists
D. Surfers
查看答案
The phrase "be brought forward" in Para. 1 most probably means ______.
A. be expected
B. be completed
C. be advanced
D. be introduced
引起肺回缩的主要因素是
A. 胸膜腔的藕联作用
B. 胸内负压
C. 肺泡表面张力
D. 支气管平滑肌收缩
E. 胸廓弹性组织的回缩力
【C2】
A. denied
B. reproduced
C. replaced
D. reduced
对机体能量代谢影响最为显著的因素是
A. 寒冷
B. 进食
C. 高温
D. 精神活动
E. 肌肉活动
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