Have you ever been to a wedding and simply loved the bride’s bouquet（花束）？More than likely some part of it was the Hawaiian Wedding Plant. This foreign houseplant can be enjoyed by anyone, not just brides. With a little proper attention and careful planning on location, this foreign houseplant, which is from Madagascar, can be brought into the home where it can become an interesting focus.
Caring for the Hawaiian Wedding Plant is not much different from caring for any other houseplants that may already be in your home. The only difference between this type of houseplant and others is the amount of the basic requirements that this foreign houseplant needs to survive and perform beautifully. During the growing season, this plant requires its wet soil, but when winter rolls around, this plant needs its soil to be kept drier.
Hawaiian Wedding Plants should also be potted in well-drained(排水)soil and placed in a location that receives full sun. That the soil must be kept wet does not mean that it should sit in water, so the soil must drain easily or this plant will not survive. Water the plant daily and feed this plant every two to three weeks with a little fertilizer(化肥) for acid-loving plants. Prune in early spring, even as early as February. If these needs are met, this plant will stay beautiful.
The most special feature of this foreign houseplant is its long lasting blooms(开花)combined with its unbelievable sweet smell. The Hawaiian Wedding Plant blooms the heaviest in the spring months, but has been known to bloom in any warm months, so do not be surprised to find blooms most time of the year except maybe in the dead of winter.
【小题1】Why does the author mention wedding and bouquet in the first paragraph?

A．To introduce a Hawaiian wedding.	B．To attract the readers’ interest in the passage.
C．To show the beauty of the flower.	D．To teach the readers to choose proper bouquets.

【小题2】The Hawaiian Wedding Plant comes from________.

A．Hawaii

B．China

C．Madagascar

D．Alaska

【小题3】Which of the following are the growing conditions of Hawaiian Wedding Plant?
a. Wet soil.                b. Lots of fertilizer.                     c. Proper sunshine.        d. Some acid.

A．a.c

B．a. b

C．b. c

D．a. d

【小题4】What does the underlined phrase “in the dead of winter” in the last paragraph probably mean?

A．At the end of the winter.	B．At the beginning of the winter.
C．In deadly condition in winter.	D．In the coldest part of winter.

Have you ever been to a wedding and simply loved the bride’s bouquet（花束）？More than likely some part of it was the Hawaiian Wedding Plant. This foreign houseplant can be enjoyed by anyone, not just brides. With a little proper attention and careful planning on location, this foreign houseplant, which is from Madagascar, can be brought into the home where it can become an interesting focus.
Caring for the Hawaiian Wedding Plant is not much different from caring for any other houseplants that may already be in your home. The only difference between this type of houseplant and others is the amount of the basic requirements that this foreign houseplant needs to survive and perform beautifully. During the growing season, this plant requires its wet soil, but when winter rolls around, this plant needs its soil to be kept drier.
Hawaiian Wedding Plants should also be potted in well-drained(排水)soil and placed in a location that receives full sun. That the soil must be kept wet does not mean that it should sit in water, so the soil must drain easily or this plant will not survive. Water the plant daily and feed this plant every two to three weeks with a little fertilizer(化肥) for acid-loving plants. Prune in early spring, even as early as February. If these needs are met, this plant will stay beautiful.
The most special feature of this foreign houseplant is its long lasting blooms(开花)combined with its unbelievable sweet smell. The Hawaiian Wedding Plant blooms the heaviest in the spring months, but has been known to bloom in any warm months, so do not be surprised to find blooms most time of the year except maybe in the dead of winter.
【小题1】Why does the author mention wedding and bouquet in the first paragraph?

A．To introduce a Hawaiian wedding.	B．To attract the readers’ interest in the passage.
C．To show the beauty of the flower.	D．To teach the readers to choose proper bouquets.

【小题2】The Hawaiian Wedding Plant comes from________.

A．Hawaii

B．China

C．Madagascar

D．Alaska

【小题3】Which of the following are the growing conditions of Hawaiian Wedding Plant?
a. Wet soil.                b. Lots of fertilizer.                     c. Proper sunshine.        d. Some acid.

A．a.c

B．a. b

C．b. c

D．a. d

【小题4】What does the underlined phrase “in the dead of winter” in the last paragraph probably mean?

A．At the end of the winter.	B．At the beginning of the winter.
C．In deadly condition in winter.	D．In the coldest part of winter.

如图所示，甲、乙两个容器都是圆柱形的，但乙容器比较粗。两容器中盛的都是水，放在水平桌面上时液面一样高。那么下列说法中正确的是(    )

A．甲容器中的水少些，所以水对甲容器底的压强小些

B．乙容器底面积大些，所以水对乙容器底的压强小些

C．水对两容器底的压力相等，压强也相等

D．水对两容器底的压力不相等，但压强相等

下列说法中正确的是(    )

A．做托里拆利实验时，如果水银柱高度不等于76cm，就说明实验是有误差的

B．气体压强越大，液体的沸点越低

C．吸盘式挂衣钩能紧贴在平整的木板或玻璃板上，是因为它能产生很大的吸引力

D．一只氢气球在升空过程中，体积会渐渐变大，到达一定高度可能会自动破裂

下列应用属于省力杠杆的是(    )

A．手握钢笔写字	B．使用开瓶器打开啤酒瓶盖
C．用筷子夹菜	D．用长扫帚扫地

如图所示，有一个长方体的木块，分别以甲、乙两种方式浮在水面上，两种情况下所受的浮力分别为F_甲和F_乙,物体下表面所受的压强分别为P_甲和
P_乙,则F_甲和F_乙, P_甲和
P_乙的关系是(    )

A．F甲>F乙 , P甲>P乙	B．F甲<F乙 , P甲=P乙
C．F甲=F乙 , P甲<P乙	D．F甲=F乙 , P甲=P乙

在下列哪一种情况下，力对物体是做了功的（   ）

A．用力推讲台，讲台没有动	B．人提水桶沿水平地面行走
C．沿斜坡方向把物体拉上去	D．天花板上的电线吊着电灯

关于功率，下列说法正确的是（   ）

A．做功多的机器，功率一定大

B．做功时间短的，功率一定大

C．做相同的功，所用时间短的，功率一定大

D．以上说法都不对

已知甲、乙两种机械在做功过程中，甲的机械效率比乙的机械效率大，这表明 （   ）

A．甲做功比乙做功快

B．甲做的有用功比乙做的有用功多

C．甲做的额外功比乙做的额外功少

D．甲做的有用功与总功的比值比乙大

锅炉的水位计使人们能时刻了解锅炉内水量的多少，它应用了
      原理来工作的；长期堆放煤的墙角，将墙的表层刮去，里面也是黑的，这是分子的________现象造成的。