A. They would get smaller in size. B. Their signals would travel further. C. They would become less popular than television. D. They would be common household items. 参考答案:D
A. crying B. cry C. to cry D. being cry 参考答案:A 答案解析:[分析] 本题测试点为动名词的用法。can’t help后需接动名词做宾语,为固定搭配,意为“不禁”。例如:I know it isn't important,but I can’t help thi
第16题: [单项选择]世界活火山最主要集中在()。 A. 扩张板块边界; B. 地幔热柱的岩浆源的上面; C. 活动的俯冲带; D. 古老造山带 参考答案:C
第21题: [单项选择]压发式火箭降落伞火焰信号的发射方法为()。①撕掉塑料袋,拆下顶盖及底盖,并注意保持外壳上的箭头方向朝上;②将降落伞火箭信号下端的拉环取出挂在脚下,拔除安全销;③放下底部触发器的铰链式压杆,一手握住火箭筒,垂直高举过头,另一手手掌托在压杆上;④两只手用力抓住信号筒向上方拉动;⑤把压杆上推,双手迅速紧握火箭,有风时可略偏向上风,火箭很快会发射出去 A. ①②④ B. ①③⑤ C. ①②③④⑤ 参考答案:B