1.单选题- (共3题)
| A．空气中含有能支持红磷燃烧的物质 |
| B．红磷燃烧时产生白烟，说明生成了固体小颗粒 |
| C．红磷燃烧后，钟罩内的物质都不溶于水 |
| D．这个实验还不能证明空气是由哪些物质组成的 |
2.选择题- (共2题)
— What do you want to have for supper? I will cook earlier today.
— Honey, you ________. Let's go out to have something different.
根据短文内容，选择方框内的单词, 并用其适当的形式填入空白处，使短文意思连贯通顺，语法正确。
hard, others, send, teacher, mind |
Duties of a Student
Education is the very thing that we want to receive. Our parents {#blank#}1{#/blank#} us to school so as to enable (使能够) us to get knowledge and achieve great things in the future. The followings are the duties of a student which we should keep in {#blank#}2{#/blank#}.
Firstly, we should be filial (孝顺的) to our parents and respectful to our {#blank#}3{#/blank#}.
Secondly, we must study as {#blank#}4{#/blank#} as we can.
Thirdly, we must not tell lies.
Last of all, we must not criticize (苛求) {#blank#}5{#/blank#}.
To sum up, the above-mentioned rules are the very duties of a student.
3.填空题- (共1题)
（1）P表示______________；（2）2S表示______________
（3）3个铁原子______________；（4）氧元素______________
4.实验题- (共1题)
-
【1】题量占比
单选题:(3道)
选择题:(2道)
填空题:(1道)
实验题:(1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：1
5星难题：0
6星难题：1
7星难题：0
8星难题：1
9星难题：2