1.选择题- (共8题)
6.使用容量瓶配制溶液时，由于操作不当，会引起误差，下列情况会使所配溶液浓度偏低的是
①用天平（使用游码）称量时,被称量物与砝码的位置放颠倒了
②用量筒量取液体读数时仰视
③溶液转移到容量瓶后,烧杯及玻璃棒未用蒸馏水洗涤
④转移溶液前容量瓶内有少量蒸馏水
⑤定容时,仰视容量瓶的刻度线
⑥定容后摇匀,发现液面降低,又补加少量水,重新达到刻度线
①用天平（使用游码）称量时,被称量物与砝码的位置放颠倒了
②用量筒量取液体读数时仰视
③溶液转移到容量瓶后,烧杯及玻璃棒未用蒸馏水洗涤
④转移溶液前容量瓶内有少量蒸馏水
⑤定容时,仰视容量瓶的刻度线
⑥定容后摇匀,发现液面降低,又补加少量水,重新达到刻度线
2.单项选择- (共9题)
9.
It happens in plants when gardeners take cuttings from growing plants to make new _______.
| A．ones | B．one | C．others | D．other ones |
11.
Many died from the diseases ______by the Europeans.
| A．bring | B．to bring | C．brought | D．were brought |
13.
The popularity of films such as Jurassic Park, a scientist clones several kinds of extinct dinosaurs, proves how the idea struck a mixture of fear and excitement into people’s hearts.
| A．which | B．what | C．in which | D．that |
14.
Cloning plants is straightforward cloning animals is very complicated .
| A．so that | B．although | C．while | D．as if |
15.
It would be unfair to clone any extinct animals they were to live in a zoo.
| A．or | B．if | C．but | D．whether |
16.
—— I’m thinking of tomorrow’s math test. I’m afraid I can’t pass it.
——______. I’m sure you’ll make it.
——______. I’m sure you’ll make it.
| A．Without a doubt | B．Good luck | C．Indeed | D．Cheer up |
试卷分析
-
【1】题量占比
选择题:(8道)
单项选择:(9道)
-
【2】：难度分析
1星难题：0
2星难题：0
3星难题：0
4星难题：0
5星难题：0
6星难题：0
7星难题：0
8星难题：9
9星难题：0