[单项选择]

Trees have a spectacular survival record. Over a period of more than 400 million years, they have evolved as the tallest, most massive, and longest-lived organisms ever to inhabit the Earth. Yet trees lack a means of defense that almost every animal has: trees cannot move away from destructive forces. Because they cannot move, all types of living and nonliving enemies—fire, storms, microorganisms, insects, other animals and, later, humans—have wounded them throughout their history. Trees have survived, because their evolution has made them into highly compartmented organisms.
In that respect trees are radically different from animals. Fundamentally, animals heal: they preserve their life by making billions of repairs, installing new cells or rejuvenated cells in the positions of old ones. Trees cannot heal: they make no repairs. Instead, they defend themselves from the consequences of injury and infection by walling off
the damage. At the same time the
A. green
B. long-lived
C. massive
D. tall

[单项选择]

Trees have a spectacular survival record. Over a period of more than 400 million years, they have evolved as the tallest, most massive, and longest-lived organisms ever to inhabit the Earth. Yet trees lack a means of defense that almost every animal has: trees cannot move away from destructive forces. Because they cannot move, all types of living and nonliving enemies—fire, storms, microorganisms, insects, other animals and, later, humans—have wounded them throughout their history. Trees have survived, because their evolution has made them into highly compartmented organisms.
In that respect trees are radically different from animals. Fundamentally, animals heal: they preserve their life by making billions of repairs, installing new cells or rejuvenated cells in the positions of old ones. Trees cannot heal: they make no repairs. Instead, they defend themselves from the consequences of injury and infection by walling off
the damage. At the same time the
A. climbing up a tree
B. calling for help
C. moving away
D. remaining with its group

[单项选择]Nearly all trees have seeds that fail to the earth, take root, and eventually______
A. generate new seeds
B. new seeds generated
C. generates new seeds
D. new seeds are generated

[填空题]Three advantages that children have over adults in language learning include: ______ , and ______.

[简答题]People have cooked over open fires and dirty stoves for all of human history, but the simple fact is they are slowly killing millions of people and polluting the environment. Engineers and development professionals have worked on this problem for decades. My own involvement stretches back many years, and I’m well aware that well-meaning efforts have been launched, but none have managed to match the scope of the challenge.

[单项选择]Justices of the peace have jurisdiction over the trials of some civil suits and of criminal cases involving minor offenses.（　）
A. supremacy
B. authority
C. guidance
D. obedience

[单项选择]Women have significant advantages over men in space because they need less food and less oxygen and they ______ radiation better.
A. stand up to
B. stand in for
C. stand up for
D. stand in with

[单项选择]Various efforts have been made over the centuries to predict earthquakes, including observing lights in the sky and （） animal behavior.
A. abnormal
B. exotic
C. absurd
D. erroneous

[填空题]Up till now we (plant)（）over 23,000 fruit trees.

[填空题]survival