[单项选择]Electronic animals are different from living animals in that ______.


A. they enjoy the company of their owners
B. they like eating snacks and play games
C. they have some simple intelligence of human beings
D. they do not like to be left alone at home

[单项选择]Electronic animals are different from living animals in that ______.


A. they enjoy the company of their owners
B. they like eating snacks and play games
C. they have some simple intelligence of human beings
D. they do not like to be left alone at home

[单项选择]

Men have distinguished themselves from other animals, and in doing so secured their survival by the ability to observe and understand their environment and then either to adapt to that environment or to control and adapt it to their own needs. The process of careful observation, perception of a pattern in the phenomena observed, followed by use of this knowledge, has largely inspired the area of human activity known as "science".
It has also provided the basis for the traditional methodology of science. It includes objective observation, description of some phenomena, the statements of hypotheses (假说) about the events observed and possible relationships among them, the use of these to predict future events, the evidence of the hypotheses and the construction of a theory based on the evidence of the hypotheses.
But the classic "scientific method" has been criticized from a variety of points. To begin with, it is obvious that the "objectivit
A. It's of significance to make different reactions to the same things.
B. Scientific reasearch is unreliable owing to the different observations.
C. People try their best to make impartial observation.
D. The way of observation varies from person to person.

[单项选择]Human facial expression differ from those of animals in the degree to which they can be deliberately controlled and modified.（　）
A. sufficiently
B. noticeably
C. intentionally
D. absolutely

[单项选择]Animals can only survive （　）the living environment is similar to the earth.
A. which
B. whose
C. what
D. where

[单项选择]

A
Everything living on earth--plants and animals need other living things. Nothing lives alone. Most animals must live in a group, and even a tree or a plant grows close together with others of the same kind. Sometimes one living thing hunts another; one eats and the other is eaten. Each kind of life eats another kind of life in order to live, and together they form a food chain. Some food chains are simple; others are complicated. But all have two things in common--all food chains begin with the sun, and all food chain become broken up if one of the links disappears. All life depends on energy from sunlight. Only plants can use this energy directly. Their leaves are little factories that use sunlight to make food from water and things in the soil and air.
Plants in turn feed all other living things. Animals can only use the sun’s energy after it has been changed into food by plants. Some animals feed directly on plants; others eat smaller animals. Me
A. from water
B. from the air in the sky
C. from the soil
D. from water, things in the soil and air and sunlight