第11题: [单项选择]A. She did not like all the rain. B. The rain is good for the crops. C. Part of each day was clear. D. She hopes the drought is over. 参考答案:A 答案解析:[解析] M: We were on vacation two weeks. W: And half’ the time it was rainy. Q: What does th
第13题: [单项选择] 以下提供若干组考题,每组考题共同使用在考题前列出的A、B、C、D、E五个备选答案。请从中选择一个与考题相关的正确答案。每个备选答案可能被选择一次、多次或不被选择。
可引起粘砂的是 A. 包埋料不纯,耐火度不够 B. 铸模腔内壁脱砂 C. 包埋料过稀 D. 打磨铸件方法不当 E. 包埋料透气性差 参考答案:A 答案解析:包埋料不纯,耐火度不够是引起粘砂的热力性原因,包埋料中某些成分与被熔合金中的某些元素发生化学反应是其化学性原因。
第34题: [单项选择]It is ______ that mainly helps you respond to a dangerous or stressful situation. ( ) A. a signal sent by your brain B. the special function of the adrenal gland C. all stimulated parts of your body D. All of these 参考答案:B