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【单选题】
大气污染物中最主要的是:A.
二氧化碳、铅
B.
二氧化硫、烟尘
C.
汽车废气
D.
地面扬尘
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举一反三
【单选题】Mr. Stone sat tight-lipped, until toward the end when he slowly turned to the right and then to the left, looking at each of us in turn as if he wanted to register the picture on his mind. When we got...
A.
He seemed very happy.
B.
He was deeply touched.
C.
He was very pleased.
D.
He looked as usual.
【简答题】内外胚层形成的方法有五种,它们分别是()、()、()、()、()。
【单选题】例1: It came up only the other night. I followed the hostess to the table, and when she pulled the chair out I sat on it, quite naturally, since it happened to be the chair I wanted to sit in. "Well," ...
A.
he got to the chair first
B.
he happened to like the seat
C.
his wife ordered him to do so
D.
he'd walked ahead of his wife
【简答题】He got up and pulled out a handkerchief and _________(吹,擤) his nose and _________(擦拭)his face.experience.
【简答题】弹簧管压力表游丝的作用是( )
【简答题】Fill in the blanks with the idioms given. a dead-end job / stepped into his shoes / he had his work cut out / climbed to the top of the career ladder / up-and-coming / rushed off his feet / got the sa...
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