可用作透皮吸收促进剂的有( )。 A．液体石蜡 B．二甲基亚砜 C．硬脂酸 D．山

阅读短文，然后根据要求完成任务。

　  Do you carry too much on the way to school or home? Don’t worry．Try e-readers (电子阅读器) and say goodbye to your heavy schoolbag．

An e-reader has the memory space to hold hundreds of books．So people want to (A)扔掉沉书包 and read with small, light e-readers．For example，Cushing Academy，a high school in Massachusetts，USA，replaced (替换) most of the 20，000 books in (B) its library last summer．Teachers and students will use e-readers instead．

Most e-readers are thin and weigh less than 500g．They can download (下载) an e-book in 60 seconds．“It’s (C) so easy．You can have a lot of books right at your fingers!” said Meghan Chensusky．

Chinese schoolchildren are also trying e-readers．At the Shanghai World Expo (世博会)，an e-schoolbag is now on show．It is a special e-reader．Students can use it to download textbooks from the school servers (服务器)．(D)It can also send and receive homework．Some Schools in Beijing and Shanghai have tried this e-schoolbag for a few years．“It’s excellent．I (E)don’t have to carry a heaw schoolbag anymore，”said Xiao Qi，15，Beijing．

New e-readers are not just for reading．They have Wi-Fi and multimedia (无线电视和多媒体)．Parents worry that these may hurt their children’s study habits． “I think Wi-Fi is not necessary for kids，”said Zeng Wenwen，43， Beijing．

小题1:将文中划线部分(A)译成英语:________________

小题2:文中划线部分(B)指代的是:________________

小题3:写出文中划线部分(C)和(E)的同义词或近义词：________ ________

小题4:将文中划线部分(D)改写为：Homework can also__________  _________and received through it．

小题5:从文中找出两个修饰或描写e-reader的形容词：________ ________

人类需要清新的空气，下列情况不会造成空气污染的是（　　）

A．煤炭燃烧

B．光合作用

C．燃放烟花

D．汽车尾气

近年来，新疆特色农业发展迅速，哈密瓜、香梨等特色瓜果驰名中外。据此完成1~3题。

1、新疆发展特色农业的优势区位条件是[ ]

A、光热充足

B、交通便利

C、科技发达

D、土壤肥沃

2、新疆发展特色农业的主要限制性因素是[ ]

A、市场

B、政策

C、气候

D、水源

3、实现新疆农业可持续发展的有效措施是[ ]

A、提高水资源利用率，发展节水农业

B、利用水资源，大力发展水产养殖业

C、利用光热资源，大面积种植热带水果

D、提高土壤肥力，大力发展林业及林产品加工

对心排出量下降起决定因素的是

A．心肌收缩力下降
B．心脏前负荷增加
C．心脏后负荷增加
D．严重的心动过缓或过速
E．心脏神经调节紊乱

简述三方协商机制的组织形式。