下列对于水平翻转与垂直翻转叙述正确的是：（）A.水平翻转，以一根垂直线为轴左右翻转被

读对话，判断句子正(√)误(×)。

A: We have a new classroom!

B: Really? Let's go and have a look.

B: Wow! It's so big. Where's my seat?

A: It's near the door.

B: Where's your seat?

A: Look, this is my desk and chair. This is my schoolbag.

B: What's in it?

A: Many books and pens.

B: How many books do you have?

A: Five story-books, two picture-books, one Chinese book and sixteen notebooks.

B: Wow! So many.

( ) 1. They have a new home.

( ) 2. A's (A的) seat is near the door.

( ) 3. B's seat is near the door.

( ) 4. Many books and pens are in A's schoolbag.

( ) 5. A has twenty-four books.

读下图，回答下列问题。

小题1:该图是“我国某两种农作物优势产区分布示意图”，图中①②代表的农作物是 

A．①大豆②棉花

B．①甘蔗②油菜

C．①油菜②大豆

D．①棉花②甘蔗小题2:导致我国南北方地区耕作制度存在明显差异的主导因素是

A．土壤

B．水分

C．热量

D．地形

He went _____________ just now. [ ]

A. sleep

B. to sleep

C. slept

写下列反应的化学表达式，并回答问题：

（1）镁条燃烧______，镁被用来制造焰火；

（2）加热滴有石蕊的碳酸溶液______；实验现象______；

（3）二氧化碳通入澄清的石灰水______，这个反应常被用来检验二氧化碳气体；

（4）铁丝在氧气中燃烧______，把铁丝绕成螺旋状，为了______．

以上反应中（填序号，不一定全填），属于化合反应的有______，属于分解反应的有______．

35号轻柴油，适合于东北和西北地区严冬季节使用的柴油汽车。