下列除去杂质的方法正确的是

【名词&注释】

创造性(creative)、想象力(imagination)、错落有致、摩尔根(morgan)、孟德尔(mendel)、世代交替(metagenesis)、相对性状(relative character)、细胞的全能性(totipotent cell)、居住者(occupant)、澄清石灰水

[单选题]下列除去杂质的方法正确的是

A. 除去CO2中混有的CO：用澄清石灰水洗气
B. 除去BaCO3固体中混有的BaSO4：加过量盐酸后，过滤、洗涤
C. 除去FeCl2溶液中混有的FeCl3：加入过量铁粉，过滤
D. 除去Cu粉中混有的CuO：加适量稀硝酸后，过滤、洗涤

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学习资料：

[单选题]

A. ran
B. walked
C. drove
D. cycled

[多选题]71Home can be a great place for children to study. It’s important to provide a workspace of their own where they can read books or just write a letter to their friends.

A. ● Location （位置）
B. 72 Kitchen and dining room are not so well suite for regular study. since books and pens get in the way of the day-to-day uses of those areas. Set up a place where a child can settle in and leave papers and pens at band without having to clear everything away each night. For a child that likes being alone, set aside a corner of his bedroom, but keep it separate from things like games, music and other hobbies not related to studying.
C. ● Keeping Things in Order
D. Parents should encourage their child to spread out, but to leave it neat and orderly when he isn’t using his workspace. Ownership is very important for self-respect 73 The workplace should be personal, but not another part of the playroom.
E. ● __74___
F. Encourage the whole family to help build a supportive environment that children need for success in school. Give them a good example of how to deal with problems, how to manage time and get things done in the right way. 75 Study will be more enjoyable and effective when supported by the whole family
G. Attitude Is Everything.
H. Bring Organization into Your Home.
I. Here are several ways to choose a location.
J. Building a Good Home Learning Environment.
K. Hold a can-do attitude and your child will follow your example.
L. F. Setting up a space in a common area of your home can be a good idea for children.
M. G. A child who learns to organize his spare will carry organization into every corner of his life.

[单选题]exist

A. experience
B. examine
C. excite
D. explode

[单选题]---Good morning. I've got an appointment with Miss Smith in the PersonnelDepartment.

A. --Ah, good morning. You ____be Mrs. Peters.
B. might
C. must
D. would
E. can

[单选题]下列各项中，能证明基因与染色体具有平行关系的实验是 ( )

A. 摩尔根的果蝇杂交实验
B. 孟德尔的豌豆一对相对性状^{(relative character)}的杂交实验
C. 孟德尔的豌豆两对相对性状^{(relative character)}的杂交实验
D. 细胞的全能性^{(totipotent cell)}实验

[单选题]下列对文章最后一段内容的理解和推断，准确的一项是

A. 在中国，无论官署寺院还是住宅作坊，都是由若干主、辅建筑物按一定的布局规则组合而成的一个庭院。
B. 把阳光、花木等引入到建筑范围内，打通内外，让居住者^(occupant)尽享无限空间带来的生趣，并使建筑更加活泼和适用。
C. 数千年来，遍及中国的构型各异的建筑，从富丽堂皇的宫廷到简陋朴素的民居，无一不是同一结构的院落。
D. 院落组织有主有次，主次分明，错落有致，显示了古代中国人在空间处理上非凡的想象力和创造性。

[多选题]下列哪种藻类无世代交替现象( )。

A. 轮藻
B. 海带
C. 衣藻
D. 紫菜

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