1.选择题- (共13题)
4.如图所示是Zn和Cu形成的原电池,某实验兴趣小组做完实验后,在读书卡上的记录卡如下,则卡片上的描述合理的是( )
实验后的记录:
①Zn为正极,Cu为负极
②Cu极上有气泡产生,发生还原反应
③SO42﹣向Zn极移动
④若有0.5mol电子流经导线,则产生5.6L气体
⑤电流的流向是:Cu→Zn
⑥负极反应式:Cu﹣2e﹣═Cu2+,发生氧化反应.
7.A国某一时期,待售商品价格总额为15万亿元,这一时期货币流通速度为2次。由于生产发展,货币量需增加10%.而这一时期进入流通领域的货币量为9.9万亿元。这时的通货膨胀率为 。原来标价为25元的B商品,现在价格是 。
8.可逆反应2SO2+O2⇌2SO3达到平衡的标志是( )
①消耗2mol SO2的同时生成2mol SO3
②SO2、O2与SO3的物质的量之比为2:1:2
③反应混合物中,SO3的质量分数不再改变
④恒容条件下压强保持不变
⑤一定体积下气体的密度保持不变
⑥v正(SO2)=2v逆(O2)
9.可逆反应2SO2+O2⇌2SO3达到平衡的标志是( )
①消耗2mol SO2的同时生成2mol SO3
②SO2、O2与SO3的物质的量之比为2:1:2
③反应混合物中,SO3的质量分数不再改变
④恒容条件下压强保持不变
⑤一定体积下气体的密度保持不变
⑥v正(SO2)=2v逆(O2)
10.可逆反应2SO2+O2⇌2SO3达到平衡的标志是( )
①消耗2mol SO2的同时生成2mol SO3
②SO2、O2与SO3的物质的量之比为2:1:2
③反应混合物中,SO3的质量分数不再改变
④恒容条件下压强保持不变
⑤一定体积下气体的密度保持不变
⑥v正(SO2)=2v逆(O2)
13.在5L的密闭容器中,一定条件下发生化学反应:2NO(g)+2CO(g)⇌N2(g)+2CO2(g).起始反应时NO和CO各为3mol,保持密闭容器体积不变,10秒钟达到化学平衡,测得N2为1mol.下列有关反应速率的说法中,正确的是( )
2.单项选择- (共14题)
14.
—What do you think of the price of the computers at this store?
—They are at least equal in price to, if not cheaper than, _____ at any other store.
—They are at least equal in price to, if not cheaper than, _____ at any other store.
A.one | B.ones | C.that | D.those |
15.
According to ________ announcement by Guangzhou Price Bureau, ________ new measures which have been taken recently are expected to cut the operation costs of each taxi driver by 1280 yuan.
A.the, \ | B.an, the | C.\, the | D.an, \ |
16.
—Ang Lee won the Best Director Oscar at the 85th Academy Awards Ceremony.
—But when he was young, no one could have imagined how well he ____ in the world of entertainment.
—But when he was young, no one could have imagined how well he ____ in the world of entertainment.
A.would do | B.was doing | C.had done | D.did |
17.
In everyday communication, information ___ by gestures is often misinterpreted.
A.suggested | B.conveyed | C.expressed | D.signaled |
18.
—Why did you leave without a word of warning to John?
—But what _____ otherwise? He never listens to me.
—But what _____ otherwise? He never listens to me.
A.could I have done | B.would I do |
C.must I have done | D.should I do |
19.
The petrol in the car _____ on our way to the beach, so we had to walk there.
A.gave up | B.gave off | C.gave in | D.gave out |
20.
—Your shoes don’t match your dress exactly.
—Well, Bill told me not to buy them, but I bought them ________.
—Well, Bill told me not to buy them, but I bought them ________.
A.even | B.anyway | C.thus | D.instead |
21.
To work from home, which one could hardly imagine, has been made with the development of computer technology.
A.possible | B.it possible | C.possibly | D.to be possible |
22.
_____ the lawyers, volunteers from the Libyan Red Cross Society also joined the efforts in helping the Chinese go home safely.
A.Except for | B.In spite of | C.Apart from | D.Instead of |
23.
—Look, the paint is starting to come off ____ the wall is damp.
—Well, we'd better have the wall repainted some day.
—Well, we'd better have the wall repainted some day.
A.when | B.where | C.if | D.once |
24.
The engineer spoke highly of the government’s efforts, ____ he owed his safe return from Libya.
A.through which | B.to which | C.with whom | D.for whom |
25.
When I try to understand ____ that prevents so many Americans from being as happy as one might expect, it seems to me that there are two causes.
A.why does it | B.what does it | C.what it is | D.why it is |
26.
Mary often stays up, reviewing her lessons, books___ all over the desk.
A.spreading | B.spread | C.are spreading | D.to spread |
试卷分析
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【1】题量占比
选择题:(13道)
单项选择:(14道)
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【2】:难度分析
1星难题:0
2星难题:0
3星难题:0
4星难题:1
5星难题:0
6星难题:13
7星难题:0
8星难题:0
9星难题:0