在下列操作中，所使用的仪器能够达到目的是（）。A用5mL量筒准确量取4.55mL水B用托盘天平准确地称取6.82g食盐C过滤时用玻璃棒搅拌漏斗内的液体，以加速过滤D萃取操作时，应选择有机萃取剂，且萃取剂的密度可以比水大也可以比水小

在一密闭容器中，反应aA（g）⇌bB（g）达平衡后，保持温度不变，将容器体积增加一倍，当达到新的平衡时，B的浓度变为原来的60%，则（ ） A平衡向逆反应方向移动了B物质A的转化率增大了C物质B的质量分数减小了Da＞b

某化妆品的组分Z具有美白功效，原从杨树中提取，现可用如下反应制备：下列说法错误的是（  ）。AX、Y和Z均能使溴水褪色BX和Z均能与NaHCO3溶液反应放出CO2CY既能发生取代反应，也能发生加成反应DY可作加聚反应单体，X可作缩聚反应单体

以下对于物质的俗称、化学式、分类和用途的说法，其中不完全正确的一组是（ ）AABBCCDD

关于化学反应类型说法正确的是（）。A有单质生成的反应是分解反应B两种化合物之间的反应是复分解反应C元素存在形态发生改变的反应是置换反应D化合反应中生成物的物质的质量可能等于反应物的物质的质量和

下列物质的方程式正确的是（）。AB​​​​​​​​​​​​​​C​​​​​​​​​​​​​​D​​​​​​​​​​​​​​

The police were seeking more information to find out _______ the rich man.Awho was it that killedBwho it was that killed

This crop has similar qualities to the previous one, _______ both wind resistant and adapted to the same type of soil.Ab

Do you think _______ a good idea that he sold the vegetables at half price_______ let them go bad?Ait’s; as well asBit;

An institution that properly carries the name university is a more comprehensive and complex institution than any other

What is the requirement of the most liberal wing of the Democratic-party?AThey want a more direct action.BThey want an i

Y’s utterance in the following conversation exchange violates the maxim of __________. X: Who was that you were with las

What essentially distinguishes semantics and pragmatics is whether in the study of meaning _________ is considered. Aref

What maxim is flouted in the examples A: Shall we get something for the kids? B: Yes. But I veto I-C-E-C-R-E-A-M.AThe ma

If a teacher asks “What does corrective feedback mean”, this type of question is called “______”.Areferential question B

请简要分析这两种语音教学方法？（10分）

Whichaspectdostudentsfocusonwhenthey learntheusageofvocabulary?ASpelling.BLexicalrules.CCollocation.DPronunciation.

Organizing students to anticipate the general content of the reading passages should be in the step of _____.Apost-readi

请简要分析任务型教学法的教学过程。

During class, the teacher leads students to memorize the important points of the teaching content. On one hand, the teac