Question

【题目】—Too much homework has made me tired these days, Mr. Wang.
—That's true. But a small tree won't grow into a big tree it experiences lots of winds and rains.
A.if
B.because
C.when
D.unless

Answer 1

【答案】D
【解析】句意：—王先生，这些天太多的作业使我感到疲倦。—那是真的。但是一棵小树如果不经历风雨是不会长成大树。if如果；because因为；when当……时候；unless除非；结合句意表示不经历风雨，不会长成大树，应用连词unless，故选D。