题目内容：

根据所给汉字或首字母在空缺处填上适当的单词，使句子完整，语法正确，每空一词。

1.WeChat is like China’s own v______ of Facebook, where people can post pictures, their life stories and communicate with others.

2.Human fingerprints are u________, making them suitable as long-term markers of human identity(身份).

3.The teacher grew angry when he noticed that the student was w_____ the answer to his desk-mate.

4.The students all breathed a sigh of r_______ learning that the exam was put off because of the heavy snow.

5.Colour-blind people often find it hard to d______ between blue and green.

6.Although physically _______(残疾), the students of this special school showed no sign of giving up their studies.

7.The Silk Road Economic Belt, a land-based route between China and Europe, links multiple (多种多样的) ______(文明).

8.The forest where we used to have picnics was completely ______(摧毁) by the fire caused by a cigarette end.

9.Many overseas summer programs are actually ______(商业化的) and expensive activities, not as culture-centered as promoted.

10.His interest in English ______(逐渐地) increased with the help of his knowledgeable teacher.