A:盐水
B:自来水
C:蒸馏水
D:矿泉水
⑴____ A.book B.good C.look D.school
⑵____ A.student B.Tuesday C.June D.useful
⑶____ A.bread B.speak C.teacher D.eat
⑷____ A.orange B.geography C.big D.vegetable
⑸____ A.thank B.that C.brother D.those
木工师傅做完门框后,为防止变形,通常在角上钉一斜条,他的根据是____ .