【单选题】
6. 毛果芸香碱缩瞳是：
①
激动瞳孔扩大肌的α受体，使其收缩
②
激动瞳孔括约肌的M受体，使其收缩
③
阻断瞳孔扩大肌的α受体，使其收缩
④
阻断瞳孔括约肌的M受体，使其收缩
⑤
阻断瞳孔括约肌的M受体，使其松弛
【单选题】
6. A new house ___ at the corner of the road.
①
is building
②
is being built
③
been built
④
be building
【单选题】
6. Was it in this palace________ the last emperor died?
①
that
②
in which
③
in where
④
which
【单选题】
6. Our discussion ____ a wide range of subjects.
①
conveyed
②
concluded
③
covered
④
filled
【单选题】
6. I think science is ____than Japanese.
①
much important
②
important
③
much more important
④
more much important