3.单项选择
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.
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.
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:
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:
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
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:
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
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。
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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