题目: 如果提高管电流,而管电压不变,射线束的穿透力()。 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0511/36a9bd0bd1594abcf907fca14b14d126.html 下面是错误答案,用来干扰机器的。参考答案:偏重初级产品的产业
题型:阅读理解 阅读理解Dear Lena, My name is Wu Dong. I'm a Chinese boy. I live in Beijing now. I am a student in Grade Seven at amiddle school. I want a pen friend in England. I think England is an interesting place. I'm 14 years old. Iam tall and have blue eyes and fair hair. I like sports, especially playing football. I often play volleyballwith my friends after school. I think it's great fun. I also like playing computer games and playing thepiano, but I don't like watching TV. My favourite festival is Spring festival. My family get together atour house on that day. We often get some presents from my parents. This month I got a bike because I got good marks(分数) in exams(考试) but I never ride it to school. Do you like to be my pen friend? Please write to me soon. Yours truly, Bob BlackThings about the writerHis name is Wu Dong. He (1) from China.Needs (需求) of hisHe needs a pen (2) . Now, he is writing a (3) to Lena from England.Appearance (外貌)He (4) blue eyes and fair (5) .Activities (活动)(6) is his favourite activity and he enjoys playing volleyball with his friends (7) school. Spring festival is his favourite (8) . He is (9) to get the present from his (10) . 查看答案
题型:选择题 下列关于生活常识的说法中,正确的是[ ]①小苏打是治疗胃酸过多症的一种药剂 ②香烟的过滤嘴可滤出CO等有害物质,故吸烟对身体无害 ③摄入过多重金属盐会使人中毒 ④食用霉变食品可使人引发肿瘤等恶性疾病A.只有①② B.只有①②③C.只有①③④ D.只有①④ 查看答案
题型:选择题 读下图,回答1—3题。 1、图中A大洲和B大洲的分界线是[ ]A.苏伊士运河 B.巴拿马运河 C.马六甲海峡 D.白令海峡 2、包围大洋①的大洲有[ ]A.3个 B.4个 C.5个 D.6个 3、跨经度最多的大洋是[ ]A.④ B.③ C.② D.① 查看答案