单词拼写。

1. He was always __________ (谦虚的) about his role in the expedition.

2. In Africa, many people die of _____________(饥饿) every year.

3. The boy__________(配备)himself with a sharp pencil and a rubber for the mid-term exam.

4. _________(数据)show that far more people are able to ride a bicycle than can drive a car.

5. India _________(出口) tea and cotton to many countries every year.

6. Have you take this into ________________(考虑)?

7. In recently years, the number of students is ___________ (扩大)rapidly in most university

8. __________(不幸地), he didn't pass the exam again.

9. What are some of the problems caused by _______ (化学) fertilizers?

10. He grew more and more popular and became known ________________(遍及)

类推的思维方法在化学学习与研究中有时会产生错误结论，因此类推的结论最终要经过实践的检验，才能决定其正确与否，下列几种类推结论中错误的是（ ）

①钠与水反应生成NaOH和H₂；所有金属与水反应都生成碱和H₂

②铝和硫直接化合可以得到Al₂S₃；铁和硫直接化合也可以得到 Fe₂S₃

③不能用电解熔融的AlCl₃来制取金属铝；也不能用电解熔融的MgCl₂来制取金属镁

A．①

B．②③　

C．②　

D．①②③