题目内容
阅读理解。
阅读下面短文,从每小题所给的四个选项中,选出一个最佳答案。
Cicadas(蝉) that appear from underground only once every 17-years are making big news in the US. The first signs are little holes in parks and fields. Then, big, red-eyed bugs start crawling(爬) out. Thousands of these black, winged insects cover sidewalks, mailboxes, tree branches, and roofs across certain areas of America.
Many insect lovers are going out to parks to observe what scientists believe to be the largest emergence of an insect group in history. But you don't have to live in the US to study the amazing bugs that inhabit our world. Summer is coming. With it come warm days and many chances to have a look at bugs. These creatures keep our ecosystems(生态系统) running and make up the majority of our planet's population!
Many people use the words “bugs” and “insects” to refer to anything with more than four legs. But an insect actually has six legs, a three-part body, and an exoskeleton, which is a skeleton(骨骼) on the outside of its body. Ants, butterflies and cicadas are all insects.
Insects keep our environment working by recycling garbage and dead plants. They serve as food for animals, and pollinate(授粉) plants. Doctors have even found ways of using them in medical treatments to help sick people.
Tracking down insects to watch can be as simple as going to your local park to look for ants, or as complicated as walking out into the woods to find rare beetles(甲虫) Just look carefully and be patient, and something will turn up.
If you want to do more than just watch, you can collect bugs. Take along a butterfly net to catch flying insects and tweezers(镊子) to pick up bugs. Take clean, empty food jars with small air holes poked(戳) in the lids, so you can keep the bugs for a little while, perhaps overnight.
Great creatures to look out for during summer include beetles, butterflies and dragonflies(蜻蜓).However, creatures to watch but not disturb are spiders(蜘蛛) , bees, wasps(黄蜂) , and centipedes(蜈蚣).All of them may leave a painful bite if you touch them and some bites can be dangerous.
When handling and watching the insects you find, remember: they may look different from us, but they have many of the same feelings, such as fear and pain. Have a look, but no poking or pinching(捏) , please!
1.According to the passage, insects ________.
[ ]
A.are easy to handle
B.usually eat garbage or dead plants
C.will hurt you if scared
D.only show up in summer
2.Which of the following is NOT covered in the story?
[ ]
A.The importance of insects in our world.
B.Dos and don'ts of observing and collecting bugs.
C.The differences between bugs and insects.
D.Where to find the bugs to watch.
3.We can learn from the passage that ________.
[ ]
A.bugs are not insects
B.wee can watch cicadas only once every 17 years
C.insects are an important part of the food chain
D.you'd better not touch dragonflies, wasps or beetles