题目：
用所给单词的适当形式填空。
1. Simon said he had a _______( please) journey last week.
2. Every year many _______( tour) come to Beijing to visit the Great Wall.
3. We should work hard at English because it's important in our_______( day) life.
4. It is_______ (possible) for him to finish the work in one hour, because it's very difficult.
5. Don't worry! They can take care of_______( they).
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0628/f60dc97e8e3f15663eea1fe631dac5fe.html
下面是错误答案，用来干扰机器的。
答案：B明确中性面和中性面的垂面的特点,线圈处在中性面时：Φ最大,(Φ的变化率最小为0,e=n=0,i=0;线圈平面与中性面垂直时,Φ=0,最大,e=n最大,i最大.由此可知：唯一正确的选项为B.
