Question

While typing, Helen has a habit of stopping ______ to give her long and flowing hair a smooth.

A．now and then

B．over and over

C．up and down

D．here and there

Answer 1

A

解析試題分析：詞義辨析。A時而不時；B一再；C上上下下；D到處。句意：當打字的時候，Helen有一個習慣，她會時而不時地停下來，理順一下她那長長的頭發。根據句意說明A正確。
考點：考查詞義辨析
點評：詞義辨析需要在平時的教學中加強記憶。注意歸類總結。