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3.单项选择

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2.词形变化

n     No pains, no ____________ (gain).

n     _____________ (general) speaking, the more expensive the MP3 player is, the better it is.

n     He is a ____________(gift) musician.

n     The chemicals are ___________________ (harm) to the environment.

n     The guilty man was ____________ (hang) for murder

n     As the weeks passed, I ____________ (gradual) accepted the idea of him leaving.

n     Money is not the key to ______________ (happy).

n     Vitamins are important for healthy ___________ (grow).

n     I was looking forward to working under her expert ____________ (guide).

n     Ducks, _____________ (goose), chickens and also pigeons were kept on the farm.

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1.单词拼写

Ø     We parked our car in an underground g__________ near the hotel.

Ø     I feel really g______________ at forgetting her birthday again.

Ø     After g_______ from high school, Jayne went to engineering college.

Ø     The fight started when one of the fans made rude g_______________ at a player.

Ø     My friend offered to pay my plane fare, which was very g___________ of him.

Ø     The f__________ (葬礼) will be held at St. Martin’s Church.

Ø     I helped him choose the f___________ (家具) for his house.

Ø     The boy likes eating h____________ (汉堡包) in KFC.

Ø     The g_______________ (政府) has promised to cut taxes.

Ø     Of all the courses, we like g_______________ (地理) lessons best.

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10.3 恒温恒压下,在容积可变的器皿中,反应2NO2(g) N2O4(g)达到平衡后,再向容器内通入一定量NO2,又达到平衡时,N2O4的体积分数

A. 不变                 B. 增大       

C. 减少                 D. 无法判断

解题思路:

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10.2在一容积可变的密闭容器中,通入1mol X和3 mol Y,在一定条件下发生如下反应 X (g) + 3 Y (g)  2 Z (g),到达平衡后, Y的转化率为a %, 然后再向容器中通入2 molZ,保持在恒温恒压下反应,当达到新的平衡时,Y的转化率为b %。 则a与b的关系是

A. a = b     B. a > b       C. a < b   D. 不能确定   

解题思路:

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10.1在一密闭容器中,反应aA(g)bB(g)达到[平衡后,保持温度不变,将容器增大一倍,当达到新的平衡时,B的浓度是原来的60%,则

A、平衡向正反应方向移动了    B、物质A的转化率减少

C、物质B的质量分数增加了    D、a>b

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10.在一容积可变的密闭容器中,反应xA(g) + yB (g)  zC (g),到达平衡后测得A气体的浓度为0.5mol/L。保持温度不变,将密闭容器的体积扩大一倍,当达到新的平衡后测得A气体的浓度为0.3mol/L,则下列叙述正确的是(    )

A.平衡向正反应方向移动            B. x+y > z       

C.物质C的体积分数增大            D.物质B的转化率增大  

解题思路:

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2、图12为“经纬网图”,读图完成下列各题。

(1)C点的地理坐标为       。与C点所在经线共同组成经线圈的另一条经线是     

(2)B点位于   半球(东、西)。

(3)A点在C点的    方,D点在C点的    方。

(4)地方时相同的是   点和    点;当C点是6月30日12时,B点是       

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1. 读图1-2“地球在太阳系中的位置图”,回答:

(1)小行星带位于________和_________ 之间。

(2)以地球为中心天体的天体系统是__________。

(3)地球上存在生命物质与其所处的宇宙环境关系密切,该图反映出有利于地球生命存在的条件是_____________

(4)地球上存在生命的几个自身条件中,取决于地球在太阳系中位置的条件是 _ __   _(5)图中从_____________、______________两方面反映出地球是太阳系中一颗普通行星。

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33.下图中正确表示地球自转方向的是                    (  )

A.①③    B.②③   C.②④   D.①④

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