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下面是某化学教师一次习题课的教学摘录。 [任务驱动] 出示任务:如何判断金属Cu和金属Fe的强弱? (学生经过独立思考和小组合作,形成方案) [交流评价] 教师巡视并选取四个典型实验方案,让各小组评价方案的可行性并全班交流,教师点评。 方案1:Cu和Fe分别加入盐酸中 是否有气体生成 方案2:Cu和Fe分别加入食醋中 是否有气体生成 方案3:Fe加入CuSO4溶液中 是否有Cu生成 方案4:Cu加入FeCl3溶液中 Cu是否消失 [巩固提高]略 根据上述信息,回答下列问题: (1)根据化学原理,你认为哪个方案不可行?请说明理由。 (2)请你针对方案2和方案3的可行性进行分析与评价。 (3)从评价类型来看,上述教学摘录中采用的评价方式有哪些?
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【简答题】Cloning technology was a s_________ achievement in science. (壮观的,引人注目的)
【单选题】Please tell the function(s) of the underlined part(s) in each sentence. The ultimate objective of cloning technology is to cure human diseases . ·
A.
object complement ·
B.
subject complement ·
C.
 purpose adverbial ·
D.
predicate
【单选题】Please tell the function(s) of the underlined part(s) in each sentence.The ultimate objective of cloning technology is to cure human diseases.
A.
predicate
B.
subject complement
C.
object complement
D.
purpose adverbial
【单选题】下列句子中词的解释,不正确的一项是( )
A.
若无罪而就死地    就:走向
B.
挟太山以超北海  超:超过
C.
度,然后知长短  度:计量长短
D.
无恒产而有恒心者  恒:守道不变
【单选题】烤制海绵蛋糕,应放入( )的烤箱中,约烤制20分钟左右。
A.
120℃
B.
140 ℃
C.
160 ℃
D.
180 ℃
【简答题】Ever since scientists first began cloning experiments on organisms in the 1970s, ethicists and lawmakers have been expressing worry over what to do when cloning technology_________________ the ...
【简答题】教材58页,2.5.2、2.5.3
【单选题】From the text, we learn that Aldous Huxley is of the opinion that ______
A.
DNA technology should be placed in the charge of individuals.
B.
government should assume less control over individuals.
C.
people need government to protect their DNA information.
D.
old moral precepts should be abolished on human cloning.
【单选题】The following are all examples of the benefits from the cloning technology EXCEPT()
A.
treating heart attack victims
B.
releasing people"s fears
C.
treatment for infertility
D.
curing cancer
【单选题】对下列句子中词的解释,不正确的一项是
A.
如土委地 委:卸落、坠下
B.
批大郤 批:劈、击
C.
技盖至此乎? 盖:通“盍”,怎么
D.
善刀而藏之 善:好好地
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