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【判断题】
Gate valves should not be used to throttle flow for extended periods.A.
正确
B.
错误
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参考解析：
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皮皮学刷刷变学霸
举一反三
【单选题】While we are busy living our dreams, our children are busy growing up, the people we love are moving away and dying, our bodies are getting _________, and our dreams are slipping away.
A.
out of date
B.
out of control
C.
out of touch
D.
out of shape
【简答题】肺炎球菌肺炎治疗首选首选（）。
【单选题】Kelly Waterson ______ Jenny Jones on yesterday's interview panel because Ms. Jones had to handle some urgent business in Prague.
A.
replaced
B.
replacing
C.
replacement
D.
replaces
【单选题】Jones had audaciously slapped my face, and that I had been obliged to ______ against him by knocking him down.
A.
revenge
B.
avenge
C.
reward
D.
retaliate
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