hey won’t go to the zoo if it ______ tomorrow.
A. snowed
B. snows
C. will snow
查看答案
防止烟尘和有毒气体危害焊工的通风措施不应采取吸尘排烟装置。
A. 对
B. 错
What does the man want Mary to do
A. [A] To go to bed. [B] To do her homework. [C] To play computer games.
对于潮湿而触电危险性较大的环境，人体的电阻一般是按1000考虑的。
A. 对
B. 错
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