题目

动词填空  用括号内所给动词的适当形式填空。 1. His teacher will be surprised if he _________ (hand) in such a wonderful article tomorrow. 2. The little boy looks forward to _________ (see) his parents. 3. The blackboard is nice and clean now. Who ________ (clean) it for the teacher. 4. ---Millie, come here. I need your help! ---Sorry, Sandy. I _________ (talk) on the phone. 5. They are talking about which book _________ (read) first in the Reading Club. 6. Many people are so sad because we _________ (not find) MH370(马航370飞机) so far. 7. Listen to the speaker 一定温度下,密闭容器中发生反应4A(s)+3B(g)2C(g)+D(g),经2 min B的浓度减少0.6 molL-1,对此反应速率的表示正确的是(  )A.用A表示的反应速率是0.4 molL-1min-1B.2min末的反应速率v(C)=0.2 molL-1min-1C.2min内D的物质的量增加0.2molD.若起始时A、B的物质的量之比为4∶3,则2 min末A、B的转化率之比为1∶1
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