请你判断下列叙述中,不属于化学学科研究的问题是[ ]
A.研发氢能源
B.煤炭是由什么组成的
C.合成新材料
D.编写电脑程序
答案:D
1.Li Lei saved my life. I’m __________ to him. (grate)
2. The film isn’t interesting at all, so I feel _______. (bore)
3.There’s nothing in this box. It’s ___________. (full)
4. It’s _______ ( danger ) for a young boy to climb the mountains.
5.Is he getting better now? No, he is even____________.(bad)
6. Different people have different ___________. (能力)
7.Jim __________ water over his English book yesterday evening.(泼、倒)
8.My parrot’s ___________ look so beautiful in the sun. (羽毛)
9.Do you like your trip? Is it ________ (令人愉快的)?
10.Can you tell me the _____________ of the hill? (高度)
以下关于病毒的描述中,正确的说法是( )。
A.只要不上网,就不会感染病毒
B.只要安装最好的杀毒软件,就不会感染病毒
C.严禁在计算机上玩电脑游戏也是预防病毒的一种手段
D.所有的病毒都会导致计算机越来越慢,甚至可能使系统崩溃