皮皮学，免费搜题
登录
搜题
【单选题】
幼儿的衣服要宽大新适,有助于 ( ) 的卫生保健A.
免疫系统
B.
循环系统
C.
呼吸系统
D.
内分泌系统
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】In the reading room, we found her ________ at a desk, with her attention ________ on a book.
A.
seating; fixing
B.
seated; fixed
C.
sitting; fixing
D.
to sit; fixed
【简答题】现有4盒磁带，有几种包装方式？你认为哪种方式更省包装纸？（重叠处不计，画出示意图）
【单选题】若孔、轴装配之后,实现满足极限间隙,则( )
A.
）结合合用，孔、轴合格
B.
）结合合用，孔、轴不一定合格
C.
）结合合格，孔、轴合格
D.
）结合合格，孔、轴不一定合格
【简答题】Please remain __________ until the plane has come to a complete stop. A．to seat B．to be seated C．seating D．seated
【单选题】I found many people ________ on the benches at the end of the day，chatting.
A.
sitted
B.
sitting
C.
seating
D.
seat
【单选题】The teacher was surprised to see lots of people_____at the back of the room _____ worried. [ ]
A.
seating;looked
B.
seated;looking
C.
sitting;looked
D.
sat;looked
相关题目：