单项选择题
1、 在社会主义市场经济体制下，市场机制能够
A．对资源配置起基础性作用
B．保证经济总量平衡
C．实现经济结构优化
D．保证社会公平


2、 水稻和陆稻属于下列哪种生态型（　　）
A．气候
B．土壤
C．生物
D．相同的


3、 某种植物以大树作附着物，借以得到适宜的阳光和其他生活条件，但并禾从附着的树上吸取营养，这属于（　　）
A．互利共生
B．偏利共生
C．寄生
D．他感作用


4、多年生草本植物的生活型为（　　）
A．地上芽植物
B．地面芽植物
C．高位芽植物
D．隐芽植物


5、
A．would
B．folk
C．walk
D．mile


6、 回答题
    Have you ever heard of a flower whose seeds are carried and spread by elephants? The rafflesia, a rare blossom, is very unusual．Found in the rain forests of Sumatra, the rafflesia is the world's largest flower, measuring three feet in diameter!
    This giant flower is a parasite--it needs another plant to live on．It lacks the structures needed tosurvive alone．The rafflesia has no stem or leaves．It is all flower．It attaches itself to the roots of other plants and sucks their juices．The flower's favorite home is the root of the vine, which grows above ground．The rafflesia seems to burst right out of the forest floor．Its blossom weighs fifteen pounds! It has thick, spotted petals that give off a rotten smell．The center is about the size of a household bucket．After a rain, it may hold up to twelve pints of water!
    After the rafflesia dies, it becomes a pool of thick liquid in which its seeds float．Elephants
    wandering through the forest step into the mushy pool, and the seeds glue themselves to their feet．As the animals stomp through the forest, their sticky feet pick up twigs and leaves．The elephants try to rid themselves of the sticky mess, in the same way people try to get bubble gum off their shoes．The elephants rub their feet against the roots of the vine．In no time, seeds left on the vine grow into more monstrous flowers !

Elephants help to________
A．provide food for the giant flower
B．water the rafflesia with their trunks
C．carry rafflesia seeds from one place to another
D．stomp out the awful smelling petals


填空题
7、 利比希(1iebig)小因子定律是指：植物的生长取决于______状态的养分量。


8、 若ƒˊ(x)=sin x+x+1，则ƒ(x)__________．


简答题
9、阶级斗争是社会发展的直接动力。

10、 别人在场或与别人一起活动总能带来行为效率的提高。

责编：cll  评论 纠错