单项选择题
A.stir B.strengthen C.strain D.stride
The manufacturers refused to take all（）for damage cause...
单项选择题The manufacturers refused to take all（）for damage caused by misuse.
A.duty B.responsibility C.obligation D.share
If you（）bright sunlight（）dry wood with a glass, it will...
单项选择题If you（）bright sunlight（）dry wood with a glass, it will start burning.
A.expose；to B.concentrate；on C.aim；at D.focus；on
When he was a young boy, a serious disease deprived him...
单项选择题When he was a young boy, a serious disease deprived him of the（）of hearing.
A.organ B.possession C.conduct D.faculty
