1. The energetic ultraviolet radiation is ______ to life since it tends to break up the complicated molecules on which life depends.
A. indissoluble B. indolent C. indiscreet D. inimical
D 【句意】高能紫外辐射对生命是有害的,因为它倾向于分解生命赖以生存的复杂分子。
【解析】形容词词义辨析。indissoluble“不能分解的;不能溶解的;坚固的”;indolent“懒惰的;[医]无痛的”;indiscreet“轻率的;不慎重的”;inimical“敌意的;有害的”。由关键词“it tends to break up the complicated molecules on which life depends它易于分解生命所依赖的复杂分子”知“有害的”符合,由此知D项正确。
2. Eggs were on sale, and the shoppers______ the bargain.
A. snatched up B. snapped up C. smashed up D. summoned up
B 【句意】鸡蛋廉价出售,购物者们抢购该便宜货。
【解析】词组辨析。snatch up“夺取;抓起”;snap up“抢购”;smash up“撞毁;砸碎”;summon up“鼓起(勇气);唤起”。由句中关键词“bargain便宜货”的对应知“抢购”符合语境,故B项正确。
3. If you can't give up smoking completely, at least try to ________.
A. take down B. turn down C. cut down D. set down
C 【句意】如果你不能完全戒烟,至少试着减少抽烟。
【解析】词组辨析。take down“(从高处)取下;拆除;记下”;turn down“拒绝;调低(音量或热度)”;cut down“减少;砍倒”;set down“制定;把……写下来”。由句中关键词“can't give up smoking completely不能完全戒烟”与“at least至少”的对应知“减少”符合语境,故C项正确。
A. indissoluble B. indolent C. indiscreet D. inimical
D 【句意】高能紫外辐射对生命是有害的,因为它倾向于分解生命赖以生存的复杂分子。
【解析】形容词词义辨析。indissoluble“不能分解的;不能溶解的;坚固的”;indolent“懒惰的;[医]无痛的”;indiscreet“轻率的;不慎重的”;inimical“敌意的;有害的”。由关键词“it tends to break up the complicated molecules on which life depends它易于分解生命所依赖的复杂分子”知“有害的”符合,由此知D项正确。
2. Eggs were on sale, and the shoppers______ the bargain.
A. snatched up B. snapped up C. smashed up D. summoned up
B 【句意】鸡蛋廉价出售,购物者们抢购该便宜货。
【解析】词组辨析。snatch up“夺取;抓起”;snap up“抢购”;smash up“撞毁;砸碎”;summon up“鼓起(勇气);唤起”。由句中关键词“bargain便宜货”的对应知“抢购”符合语境,故B项正确。
3. If you can't give up smoking completely, at least try to ________.
A. take down B. turn down C. cut down D. set down
C 【句意】如果你不能完全戒烟,至少试着减少抽烟。
【解析】词组辨析。take down“(从高处)取下;拆除;记下”;turn down“拒绝;调低(音量或热度)”;cut down“减少;砍倒”;set down“制定;把……写下来”。由句中关键词“can't give up smoking completely不能完全戒烟”与“at least至少”的对应知“减少”符合语境,故C项正确。