问题
单项选择题
硫酸生产中的用得最多的材料是（）。
A、铝；
B、不锈钢；
C、碳钢和铸铁；
D、塑料。
答案
参考答案：C
搜题请搜索小程序“爱下问搜题”
硫酸生产中的用得最多的材料是（）。
A、铝；
B、不锈钢；
C、碳钢和铸铁；
D、塑料。
参考答案：C
| 阅读下面短文，请从方框中选出适当的句子填入文中的适当位置，使短文内容完整正确。 | |
| If there is a test at school today, you may feel awful. Your stomach may hurt and you may have a headache. Maybe even your muscles feel tense. 1 You're womed about your test because you didn't do well on the last one, or maybe you're nervous because you did well on the last one. What should you do? Ask for help. Talk to your mom, dad or your teacher. 2 They can help you find some solutions. Be prepared. Do your homework. 3 On the test day, you're more likely to feel that you know the answers. Believe in yourself. 4 "I studied and I'm ready to do my best. " Don't tell yourself "I'm not good at it. " or "I'm going to freak out(崩溃) if I get a bad grade. " 5 Take good care of yourself. You'll feel your best if you get enough playtime, sleep and nutritious(有营养的) food. This is important all the time.
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