Question

【題目】Some of my friends are interested in science， but none of them can tell ________.

A. when UFOs appeared next time

B. that horses know the way or not

C. where was this kind of plant found

D. how elephants communicate

Answer 1

【答案】D

【解析】

試題分析：句意：我的一些朋友對(duì)科學(xué)感興趣， 但沒(méi)人能告訴大象如何交流。本句是賓語(yǔ)從句，當(dāng)主句是一般現(xiàn)在時(shí)態(tài)時(shí)，從句應(yīng)為所需要的任意時(shí)態(tài)，且從句是陳述句的語(yǔ)序。所以選D。