Questions 19 to 21 are based on passage 3-2._____
A: Plants cannot see.
B: Plants are invisible.
C: Human beings cannot recognize certain species of plants.
D: Plants are damaged rather than protected by human beings.
A: Plants cannot see.
B: Plants are invisible.
C: Human beings cannot recognize certain species of plants.
D: Plants are damaged rather than protected by human beings.
举一反三
- According to the passage, dogs and cats ______ . A: as well as human beings cannot see some colours B: have fewer cones than human beings C: have less rods than human beings D: can see colours as well as human beings
- It seems that mental activities are characteristic of______ A: all plants and animals B: some insects C: human beings D: some machines
- What is synonym ? A: A name is shared by two or more species of plants B: A name is for a species of plants only C: A species of plants has two or more different names D: A species of plants has one Latin name only
- What resource plants do you know from this course?A. Grain plants, energy plants B. Aromatic plants C. Medicinal plants, drug plants D. Industrial plants and enviromrntal protection plants A: Grain plants, energy plants B: Aromatic plants C: Medicinal plants, drug plants D: Industrial plants and enviromrntal protection plants
- The ______ of plants and animals have largely influenced the history of both man and human species.