吸入N20对肝血流没有直接影响。
参考答案:对
The mother as well as her two children ________shopping in the supermarket near their house every week.
A.is going
B.go
C.goes
D.are going
The government has taken measures to ____ the high prices of daily goods to keep the market stable.
A.take down
B.bring down
C.hand down
D.tear down