All oil wells use lights as signals Some oil wells use lights as signals Some oil wells use sound signals only Some oil wells use both lights and sound signals

首次将局麻药用于手术麻醉的医生是

Takman Carlkoller Morton Wells Nieman

首次将局麻药用于手术麻醉的医生是

Takman CarlKoller Morton Wells Nieman

Oilwellswillnotusesoundsignals______．

when operating when not operating during the night time during daytime"

Iwellremembermyexperienceasavolunteer_______Ifound

where when who which

首次将麻醉药用于手术的麻醉的医生是

Takman Carlkoller Morton Wells Nieman

Be{{U}}suspicious{{/U}}aboutwaterfromothersourcess

brave doubtful quiet careful

幽门螺杆菌的发现者是

Molton Jackson Marshall& Warren Wells

临床上发生肺栓塞低风险的病人Wells评分需

小于2 大于2 小于6 大于6

Mr.PeterGreenagedtwenty-fivebattledforhalfanhourto

Water____onthemountainswebuiltmanywells.

was scarce scarce being scarce being short

Ifwegoonusingenergysowastefully_____arethatouroilw

chances　 realities 　 references 　 tensions

________, Mr. Wells is scarcely in sympathy with the working class.

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