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【单选题】
如果将前 18 号元素按原子序数递增的顺序排列,可形成如图所示的 “ 蜗牛 ” 形状,图中每个 “●” 代表一种元素,其中 1 代表氢元素。下列说法 不正确的是 A . 原子半径: 3 > 4 B . 最外层电子数 : 3 < 7 C . 最高化合价 : 2 > 5 D . 沿虚线的元素化合物性质相似A.
B.
C.
D.
D
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举一反三
【单选题】It is said that Britain does not have a _____; it only has weathers.
A.
thunder
B.
hurricane
C.
lighting
D.
climate
【简答题】What does the writer want to justify by mentioning the case of United States, and Britain etc. ?
【单选题】患者,男性,40岁,自觉疲劳,头痛,头晕1前往门诊就诊,测身高175cm,体重95kg测血压160/100mmHg。护士向患者解释高血压的高危因素,不正确的是
A.
吸烟
B.
精神紧张
C.
肥胖
D.
遗传因素
E.
长期运动
【单选题】What does the author say about wind farms in Britain?
A.
The gain does not equal to the loss.
B.
They can help solve world's energy problems.
C.
They would be perfect if they take up smaller space.
D.
They will waste the government lots of time and money.
【单选题】患者，男性，40岁。自觉疲劳、头痛、头晕1周前往门诊就诊，测身高175cm，体重95kg，测血压160/100mmHg。护士向患者解释高血压的高危因素，不正确的是
A.
吸烟
B.
精神紧张
C.
肥胖
D.
遗传因素
E.
长期运动
【简答题】What does the reporter who has visited plants throughout Europe think about Britain? ________. A) Tea breaks do not affect the intensity of work in Britain. B) Britons do their work in an unhurried so...
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