下列哪些选项中的代码在实际运行过程中会报错（ ） A: animals = ('猫','狗','猪')print(animals[0]) B: animals = ('猫','狗','猪')animals[0] = '蛇' C: animals = ('猫','狗','猪')animals = ('蛇',) D: animals = ('猫','狗','猪')animals.append('蛇')print(animals)

People couldn't live without water; ______. A: neither are animals B: nor are animals C: neither could animals D: so could animals

In China every year is represented by a repeated cycle of ___________. A: 12 birth animals B: 12 great animals C: 12 zodiac animals D: 12 beloved animals

If visitors provide food the animals, this may upset the animals’ ______.

The case ________ using animals in research: a) Animals ________ a lot during the experiments. b) Much of the research is ________. c) Animals have ________ as humans do.

Only when they are injured______. A: will some animals attack a human being B: a human being will be attacked by some animals C: some animals will attack a human being D: that some animals attack a human being

African safari is about animals in their natural habitat, and lots of animals are easily seen but__.

B. What animals do you see? Write the names of three animals in the video.__________________ __________________ __________________

Ocean is a word for _______. A: the place where animals inhabit B: animals’ behaviors C: wildlife conservation

Make the choice: A: Many more animals will die out if the forest continues to be destroyed. B: Many more animals have the instinct of protecting themselves from being extinct. C: The forest will become extinct if animals are killed. D: Many more animals are living in the forest.