17.The pilot,whether ______ or design,made the plane do a sharp turn.( 。
A.by accidentB.at timesC.suddenlyD.all at once

分析 飛行員不知是偶然還是故意,讓飛機(jī)來了個(gè)急轉(zhuǎn)彎.

解答 答案A.
考查介詞短語.by accident偶然,意外地;at times有時(shí),偶爾;suddenly突然地;all at once突然.根據(jù)句意:飛行員不知是偶然還是故意,讓飛機(jī)來了個(gè)急轉(zhuǎn)彎.故選A.

點(diǎn)評 考查短語的題,熟記短語的意思,將選項(xiàng)分別代入題干進(jìn)行選擇.

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