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【单选题】
流行性感冒的主要临床表现是A.
上呼吸道症状较重,无发热和全身中毒症状
B.
上呼吸道症状较重,发热和全身中毒症状较轻
C.
上呼吸道症状较轻,发热和全身中毒症状较重
D.
上呼吸道症状较轻,发热和全身中毒症状较轻
E.
无呼吸道症状,发热和全身症状较重
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【单选题】Jan is a security officer. Jan believes that it is important to know exactly who is in the office at any given time. She notices that some employees do not sign out of the office when they take lunch,...
A.
Jan believes that it is important that she know exactly who is in the office at any given time.
B.
Jan notices that some employees do not sign out of the office when they take lunch.
C.
Jan finds it impossible to keep track of who is actually in the office.
D.
Jan becomes frustrated with those employees who do not sign out of the office.
E.
Jan notes which employees leave the office without signing out, and reports them to their supervisors.
【单选题】The tour guide is
A.
announcing the arrangement for today's tour.
B.
expressing warm welcome to the tourists.
C.
giving advice to the tourists.
D.
introducing a famous scenic spot.
【简答题】钢中非金属夹杂物来源于两个方面,一是内生夹杂物,二是 夹杂物。
【简答题】如何在显微镜下区分外来夹杂物和内生夹杂物?
【单选题】The tour guide is _____ visitors around the city.
A.
show
B.
showing
C.
shows
D.
showed
【单选题】Do not leave out any _________ information. Otherwise, you may face serious consequences.
A.
vivid
B.
victory
C.
vital
D.
virtual
【简答题】连铸坯中的夹杂物，按（）分内生夹杂物和外来夹杂物。
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