7.The driver turned sharply to-----left to avoid a stone only to knock into------tree by the road.

题目

7.The driver turned sharply to-----left to avoid a stone only to knock into------tree by the road.
A.;the B;a C.the; Dthe;a
8.the warmth of----sweater is determined by the sort of------wool used.
A.the;the B.the; C;the D;
9.----teacher of my grandfathers will visit us tomorrow.I am wondering
how old-----man he is.
A.the;a B.A;a C.A;the DThe;the
10.The aid set aside by ------government are for--------people of the flooded area.
A.the; B.The;the C.;the D.;
11.----- Pacific region will be one of the fastest growing areas in the world in ------21st century.
A.The; B.The;the C;the D;
12.THe frofessor and-----scientist we are talking about is------able man.
A.;an B.the;an C.;a D.the;a
13.Dont borrow money from him.He is-----than you.
A.ont rich B.no rich C.not richer D.no richer
the key isDBBBBAD
bue mine isADACABC
piease tell me why!

答案

第七题：turn to the left 固定用法,指的是在马路的左边
knock into a tree 在这里是泛指,某一棵树.
第八题：毛衣的保暖程度是由羊毛的材质决定的,材料前面不需要加冠词
第九题：我祖父的一个老师明天要来拜访,我想知道这个老人多大了
这里的A是泛指后面的我觉得应该用特指才对,但不知道问什么答案要选a
第十题,十一题：固定用法
第十二题：这里的Professor和scienst指的是同一个人,根据句子的谓语动词is可以来判断we are talking about 是定语,修饰的是这个人.
第十三题：no +形容词或副词比较级+than可以表示“与...同样不的意思,和该形容词或副词的意思相反.固定用法