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【单选题】
封闭式提问的不足之处是A.
收集信息不全
B.
谈话气氛紧张
C.
谈话不容易控制
D.
以上都是
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Th e workers are _______ a tall _______. [ ]
A.
build, build
B.
builder, builder
C.
builds, builds
D.
building, building
【单选题】Where is the train to Nanjing now standing?
A.
At platform. 7．
B.
At platform. 8．
C.
At platform. 9．
【单选题】The museum will open in the spring with an exhibition and a viewing platform ________ visitors can watch the big glasshouses being built. (2013·浙江，13)
A.
what
B.
where
C.
when
D.
why
【单选题】The App WeChat provides a networking platform ______ communication is faster and easier.
A.
which
B.
where
C.
when
D.
why
【简答题】能用于挥发油鉴别的物理常数有( )、( )。
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