题目

Cathy is afraid of the dog. She will run away _______she sees it. A. ever since      B. although            C. as soon as          D. so that 答案：C 【解析】句意：凯西害怕狗，她一看到狗就跑了。考查连词辨析。A. ever since自从；B. although虽然、尽管；C. as soon as一……就……；D. so that以便；所以。根据Cathy is afraid of the dog. 凯西害怕狗，可推知是她一看到狗就跑开了，结合选项可知C选项符合题意，故答案选C。4．求100gNH4NO3中氮元素的质量．