题目内容
A lot of people are afraid spiders（蜘蛛）–even the small ones. But a big tarantula（鸟蛛）is much more terrifying for many. Now, scientists in Sri Lanka have discovered a huge species of tarantula that’s about the size of a person’s face.
The first part of the spider’s scientific name, Poecilotheria rajaei, comes from the Greek words for “spotted”(poikilos) and “wild beast” (therion). Its species name, rajaei, comes from a local police officer who helped the team that discovered the creature. Poecilotheria rajaei has 8-inch long legs, and unusual spots colored gray, pink, and yellow.
Although it is very big, is there a real reason to be afraid of one? Maybe. This tarantula has enough poisonous fluid（毒液）to kill mice and small birds and snakes –but its bite wouldn’t cause the death of most humans.
Poecilotheria rajaei was first seen in 2009, when a villager in Sri Lanka found the body of a male and brought it to Ranil Nanayakkara, co-founder of Sri Lanka’s Biodiversity Education and Research organization.
An examination of the awesome creature proved that it was a type of tarantula scientists hadn’t seen before. So Nanayakkara carefully looked through the Sri Lankan forests to try to find more of the spiders.
It’s still too early to know whether this species is endangered. But researchers fear that the tarantulas’ natural habitat is slowly being destroyed.
“ They prefer old trees, but due to the widespread removal of trees the number has dropped,” Nanayakkara said in an interview.
Tarantulas have eight legs and two body parts. They are different from insects, which have only six legs but three body parts. Tarantulas have hairy bodies and are usually larger than other types of spiders. Some species of tarantulas can live up to 25 years.
While Poecilotheria rajaei is very big, the largest tarantula is the Goliath bird-eater (Theraphosa blondi). Found in the rainforests of South America, its legs can be up to 10 inches long. But don’t worry if you ever see one: Its poisonous fluid isn’t really dangerous to humans.
1.According to the text, Poecilotheria rajaei _______.
A. has unique spots
B. is mostly yellow
C. has 10-inch long legs
D. was first seen by the Greeks
2.Which of the following is most likely to survive a bite from Poecilotheria rajaei?
A. A little girl
B. A small bird.
C. A big mouse
D. A small snake.
3.The number of Poecilotheria rajaei has dropped because___________.
A. the global climate has changed
B. they have too many natural enemies
C. some people are killing them illegally
D. more and more forests are disappearing
4.Which of the following is TRUE about tarantulas?
A. They are a kind of insect.
B. Most of them live in South America.
C. Their body is divided into three parts.
D. They are usually of bigger size than other spiders.
5.Which section of a newspaper is the text most probably taken from?
A. Life B. Nature
C. Science D. Business
中考解读考点精练系列答案B
Chemical Safety
Procedures for handling chemical spills(泄露) and leaks.
Chemical spills and leaks can be broken down into two basic types: simple spills, which you can clean up yourself and complicated spills, which require outside assistance.
If your spill meets ANY of the following conditions, it is a COMPLICATED SPILL.
? A person is injured; or
? The identity of the chemical is unknown; or
? Multiple chemicals are involved; or
? The chemical is highly poisonous, flammable (可燃的) or reactive ; or
? The spill/leak occurs in a “public space” such as a corridor; or
? The spill/leak has the potential to spread to other parts of the building such as through the ventilation (通风) system; or
? The clean up procedures are not known or appropriate materials are not readily available; or
? The clean up requires a respirator (呼吸器) (including cartridge respirators) to be worn and no personnel have been trained and fit-tested in accordance(一致) with the campus Respiratory Protection Program; or
? The spill/leak may endanger the environment by reaching waterways or outside ground, or by going down a drain
If none of the above conditions are met, the spill is defined as a simple spill. You may clean up simple spills in accordance with Chapter 6 of the Chemical Safety Guide. For consultative assistance, call Division of Research Safety (DSR) at 333-2755.
How to report a complicated spill 1. Evacuate(撤退) to a safe location, and alert others to evacuate. 2. Dial 9-911 from a campus phone. 3. Tell the operator you are calling to report a chemical spill at the University of Illinois. 4. Have the following information ready. ? Name of chemical ? Quantity spilled ? Location of spill (Full building name and room number) ? Number of people injured or slashed ? If applicable, the occurrence of a fire or explosion ? Your name and phone number 5. Have someone knowledgeable about the chemical spilled meet the fire department at the main entrance to your building. Take a Material Safety Data Sheet (MSDS) of the chemical, if it is readily available. |
1.Which of the following situation can be classified as a simple spill?
A. Some spilled liquid causes a fire in the building.
B. Yellow and green gases are leaking from the storage room.
C. An unknown red chemical is found on the corridor floor.
D. A researcher spills his milk all over the lab floor.
2.According to the safety instructions, upon discovering a complicated spill on campus, people should _________.
A. put on a respirator as soon as possible
B. refer to Chapter 6 of the Chemical Safety Guide
C. get away from the spill and report it to authorities
D. call Division of the Research Safety at 333-2755
3.“MSDS” in the passage possibly refers to _____.
A. a mask
B. an explanation about the chemical
C. a device
D. another kind of chemical
4.Who are most possibly the targeted audiences of this article?
A. Students in the Chemistry Department of a university.
B. Researchers working at Chemical Institution of Illinois.
C. Members of Division of Research Safety.
D. Staff members at a chemical manufacturing company.
5.The purpose of the material above is to ____________ .
A. inform people of the dangers of various chemical spills
B. introduce complicated spills and necessary measures in response to them
C. encourage students to join the campus Respiratory Protection Program
D. compare simple spills and complicated spills
