问题
单项选择题 B型题
用作液体药剂的防腐剂是（）
A、羟苯酯类
B、阿拉伯胶
C、阿司帕坦
D、胡萝卜素
E、氯化钠
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
用作液体药剂的防腐剂是（）
A、羟苯酯类
B、阿拉伯胶
C、阿司帕坦
D、胡萝卜素
E、氯化钠
参考答案：A
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| Have you ever planted a few trees on Tree Planting Day? Each year, millions of people, both 1 , plant a lot of trees. But this may not be the best way to make your home a 2 place. Last week we visited a park in Hebei. We were 3 to find most of the trees had been burned. The workers told us that the trees 4 soon after they were planted because they weren't watered well enough. 5 workers burned them and cleaned the place for 6 trees to be planted this year. 7 a card found in one of the dead trees, a student wrote:"I hope this tree will grow up with me to 8 the backbone (栋梁) of our country." The workers said that the survival (存活) of the trees was really more important than 9 trees were planted. Some people in Beijing now have a new idea that they can donate (损赠) some money and let professionals (专业人士) plant and 10 the trees. | |||
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