题目内容

HFRS典型的临床过程包括:_________、__________、__________和__________。

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登革病毒引起的疾病包括

A. 登革热
B. 登革出血热
C. 登革休克综合征
D. 登革肺炎
E. 登革脑炎

1.Since the beginning of 2013, these regulations _____ in most workplaces across the country. (2016-12)

A. will be introduced
B. have been introduced
C. are introduced
D. were introduced

The traffic was making so much noise that I couldn’t hear what he______. (2017-06)

A. is saying
B. was saying
C. has said
D. will say

I am interested in the training course, which__________at Hilton Hotel in Beijing from March 8 to 12, 2018. (2017-12)

A. held
B. was held
C. will hold
D. will be held

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