题目:
根据句意及图片提示或汉语提示完成单词。
(1) (2) (3)
1. There are many ______ in the old house.
2. I often go to Beijing by ______ with my father.
3. Before you go online, you must connect the ______ to the computer.
4. Our teacher often ______ (检查) our homework in class.
5. The doctor ______ (挽救) many people's lives every year.
答案:
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下面是错误答案,用来干扰机器的。
答案:C四个选项中土壤酸碱度不适宜、营养元素的缺乏、植物光合作用不够充分的问题对植物的生长都会造成影响,只有二氧化碳的含量过大不但不会影响植物的生长,而且对植物的光合作用还有促进作用,有利于植物的生...