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Sun Yang gets 8-year ban Chinese Olympic and world swimming _____1_____ Sun Yang was handed an eight-year ban as the Court of Arbitration of Sport (CAS) upheld the World Anti-Doping Agency (WADA)'s appeal. Sun said he will appeal to the Swiss Federal Tribunal against the CAS decision. Sun refused to complete a doping test _____2_____ by the international testing company IDTM on Sept 4, 2018, saying the _______3________ and her assistants lacked sufficient _____4_____ and credentials. His case was later _____5_____ by swimming's world governing body FINA, who decided on Jan 3, 2019 that the swimmer was not guilty of anti-doping rule _____6_____ . WADA disagreed and appealed the decision. PM to marry pregnant partner British Prime Minister Boris Johnson and his girlfriend Carrie Symonds are expecting their first child and have announced their _____7_____ . "The prime minister and Miss Symonds are very pleased to announce their engagement and that they are _____8_____ a baby in the early summer," a spokesperson for the couple said on Saturday. The announcement means Johnson will become the first British prime minister to _______9_______ for nearly 200 years. Johnson, 55, had four children - - _____10_____ now - - with his ex-wife Marina Wheeler. 答案解释 1. arbitration n. 公断,仲裁 Both sides in the dispute have agreed to go to arbitration . 争执双方已同意提请仲裁。 2. anti-doping n./adj. 反兴奋剂 / 反兴奋剂的 dope v. to give sb a drug, often in their food or drink, in order to make them unconscious; to put a drug in food, etc. 给 ... 服麻醉剂;在(食物、饮料)中掺麻醉剂 3. credentials: documents such as letters that prove that you are who you claim to be, and can therefore be trusted 资格证书;证明书;证件
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【单选题】某反应速率常数k为0.107min-1,则反应物浓度从1.0mol·dm-3变到0.7 mol·dm-3和浓度从0.01mol·dm-3变到0.007mol·dm-3所需时间的比值为( )
A.
10
B.
100
C.
0.01
D.
1
【单选题】根据杂化轨道理论,H2O分子的杂化方式是
A.
sp 等性杂化
B.
不等性杂化
C.
等性杂化
D.
不等性杂化
【单选题】数据库技术研究的新特点,错误的是( )
A.
数据库技术与多学科技术的有机结合
B.
从内容管理过度到单纯的数据管理
C.
数据库研究呈现多层次化趋势
D.
数据库研究面向实际应用
【单选题】我国制定了刑事诉讼法,规定未经(),对任何人不得确定有罪的刑事诉讼的基本原则和制度
A.
人民法院依法判决
B.
法庭依法判决
C.
检察院依法判决
D.
行政机关依法判决
【简答题】计算含有游离F - 浓度为0.01mol·dm -3 的0.1mol·dm -3 溶液中的Al 3+ 浓度。已知 的各级累积稳定常数为:β 1 =1.3×10 6 ,β 2 =1.4×10 11 ,β 3 =1.0×10 15 ,β 4 =5.6×10 17 ,β 5 =2.3×10 19 ,β 6 =6.9×10 19 。
【简答题】向浓度均为0.01mol·dm -3 的KBr、KCl、K 2 CrO 4 的混合溶液中逐滴加入0.01mol·dm -3 AgNO 3 水溶液,析出沉淀的先后顺序为——。
【简答题】PbSO 4 的 =1.6×10 -8 ,在纯水中其溶解度为______mol·dm -3 ;在浓度为0.01mol·dm -3 的Na 2 SO 4 溶液中其溶解度变为______mol·dm -3 。
【简答题】向浓度均为0.01mol·dm -3 的KBr、KCl、K 2 CrO 4 的混合溶液中逐滴加入0.01mol·dm -3 AgNO 3 水溶液,析出沉淀的先后顺序为______。
【单选题】根据杂化轨道理论,H2O分子的杂化方式是
A.
不等性杂化
B.
sp 等性杂化
C.
不等性杂化
D.
等性杂化
【单选题】用同一电导池测得浓度为 0.01mol·dm -3 的 A 溶液和浓度为 0.01mol·dm -3 的 B 溶液的电阻分别为 1000 Ω 和 500 Ω ,则它们的摩尔电导率之比 Λ m,A / Λ m,B 为( )
A.
1:2
B.
2:1
C.
1:1
D.
4:1
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