皮皮学，免费搜题
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【单选题】
小王在一家环评公司工作,请问他所在的行业是( )A.
教育
B.
水利、环境和公共设备管理业
C.
科学研究、技术服务和地质勘查业
D.
居民服务和其他服务业
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【单选题】My wallet is nowhere to be found. I______ when I was on the bus.
A.
must drop it
B.
should have dropped it
C.
must have dropped it
D.
had dropped it
【单选题】My wallet is nowhere to be found. I______it when I was on the bus.
A.
must drop
B.
had dropped
C.
must have dropped
D.
should have dropped
【简答题】My wallet is nowhere to be found.I_____it when I was on the bus. a.must drop b.should have dropped c.had dropped d.must have dropped
【简答题】从原理课研究的角度来说,机器和机构有区别吗?
【单选题】My wallet is nowhere to be found. I () in the store.
A.
must drop it
B.
must have dropped it
C.
should have dropped it
D.
ought to have dropped it
【单选题】-What's the matter,Mary? You look ________! -My wallet is nowhere to be found,and my identification card (身份证) is in it. [ ]
A.
disappointed
B.
moved
C.
excited
D.
upset
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