明史专家吴晗在《朱元璋》一书中曾这样描述我国古代的君臣关系：“在宋以前有三公坐而论道的说法……到宋朝便不然了。从太祖以后，大臣上朝在皇帝面前无坐处，一坐群站，……到了明代，不但不许坐，站着都不行，得跪着说话了”。君臣关系从坐而站而跪，说明中国古代中央政治制度演变的重要特点是(     )

从方框中选择适当的单词，并用正确的形式补充句子。 

1. I'm ____my vacation to Italy this weekend.
2.A doctor can____  you medicine.
3.I have a toothache. I ____ to see a dentist.
4.Grandpa is pretty healthy because he ____ every day.
5.A lot of vegetables____you to keep in good health.

完形填空。
   A man was walking along the street when he saw a woman struggle（奋力）with a large box. It was half in and half 1 of her car. He was a helpful kind of man, so he went up to the woman and said, “Let me give you a hand with that box. It looks very 2.”
“That’s very kind of you,” the woman said. “I’m having a lot of 3with it. I think it’s struck（卡住）.”“Together we’ll soon move it,” the man said. He 4 into the back seat of the car and took hold of the other end of the box. He said, “I’m ready.” And he began to5 hard.
   For several minutes the man and the woman struggled with the box. Soon they were 6 in the fact. “Let’s rest for a minute,” the man said. “I’m sorry, but it 7 stuck.” A few minutes later, the man said, “Let’s try again. Are you ready?” 8 of them took hold of the box again. “One, two, three!” the man said, and they went on with their struggle.
   At last, when they were very tired, the man said, “You are9. It really is stuck. I don’t think there’s 10 we can get it out of the car.”“Get it out of the car!” The woman cried. “I’m trying to get it in!”