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( )反映观察者对某个表面明亮程度的视感,是评价道路照明效果的重要参数之一。
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【简答题】用单词的适当形式填空。 1.Mr. Smith is ________(sit) on the couch. 2.I ________(buy)some Christmas cards yesterday. 3.Li Ming is ________(write) a letter. 4.We are going to ________(make) a snowman. 5.Danny has a...
【简答题】单句改错 ( 每句仅 1 处错误 ) 1 . She was left to sweeping up after the party. 2 . He was under the impression which I was coming the next day. 3 . As a result of eat some bad fish , he had a stomachache the nex...
【简答题】听短文，选择最佳答案。 1. What was the girl wearing? A. She was wearing black clothes. B. She was wearing a pair of sunglasses. C. She was wearing a beautiful skirt. 2. When did the girl become blind? A. She bec...
【单选题】根据Ksp值比较下列几种难溶物溶解度最小的是( )
A.
BaCrO 4 (Ksp=1.17×10 -10 )
B.
CaCO 3 (Ksp=4.96×10 -9 )
C.
AgCl(Ksp=1.77×10 -10 )
D.
AgI(Ksp=8.51×10 -17 )
【简答题】按要求转换下列句子。 1. She was happy when she heard the news. (改为同义句) She was happy ________ ________ the news. 2. The present is very nice. (改为感叹句) ________ ________ nice present it is! 3. You have few friend...
【简答题】句型转换。 1. She was so weak that she didn't catch up with others.(同义句转换) She was ______ ______ _______ to catch up with others. 2. I don't like coffee. Sally doesn't like coffee, toe. (合并成一个句子) _____ Sal...
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