水泥与水拌和后成为塑性胶体，既能在空气中硬化，又能在水中硬化，水泥是一种水硬性胶凝材

句型转换。

1. When I grow up, I want to be an artist.（对画线部分提问）

              do you want to ____ when you grow up?

2. John needs to cut his hair because his hair is too long.（改为同义句）

    John needs to ____ his hair        because of his long hair.

3. After planting the trees you should water them often.（改为同义句）

    The trees                           often after they_______    __________.

4．Tim likes Chinese. So does Rose.（将两句合并为一句）

             Tim        Rose ____ Chinese.

5. Lucy doesn't seem to have many friends here.（改为同义句）

                                   Lucy doesn't have many friends here.

皮肤 * * 状疣属于

A．良性肿瘤
B．交界性肿瘤
C．恶性肿瘤
D．肿瘤样病变
E．继发性肿瘤

怎样辨别优良和劣质的啤酒？

市场价格等于1.8元时，需求量为1600个单位，供给量为4800个单位，则（）

A、交易量是1600个单位

B、交易量是4800个单位

C、交易量是2200个单位

D、没有交易，因为市场供求不均衡

我国的企业年金为（ ），即企业年金计划不向职工承若未来年金的数额或替代率，职工退休后年金的多少完全取决于职工和个人的缴费金额及投资收益。

A．确定收益型

B．确定缴费型

C．确定金额型

D．确定利季型