题目

压强----压强减小到原来的1/4---做法为了将压强减小到原来的1/4，以下做法中可达到目的的是A、受力面积不变，压力减小1/4；       B、压力不变，受力面积减小到原来的3/4 ；  C、压力和受力面积同时减小到原来的1/4   D、压力减小1/2 ，同时受力面积增大1倍。 答案：句型转换 82. He speaks French as well as English.（改为被动语态）    French and English _______ ______well by him. 83. The family didn't have enough money to send her abroad.（同义句）    The family couldn't _______to send her abroad. 84. Do you mind if I sit here?（同义句）    Do you mind my _______here? 85. Snow in winter is harmless to crops in the fields.（反意疑问句）    Snow in winter is harmless to crops in the fields, _______ _______? 86. His father has been dead since three years ago.（对画线部分提问）     _______ _______has his father been dead? 87. He didn't put on his coat because of the hot weather.（对画线部分提问）     _______ _______ he put on his coat? 88. advice, she, you, afternoon, did, good, any, give, yesterday（将所给单词连成一句语序正确的句子） ________________________________________________________________________?