2020-2021学年龙岩高级中学高三英语一模试卷及参考答案

2020-2021学年龙岩高级中学高三英语一模试卷及参考答案

第一部分阅读（共两节，满分40分）

第一节（共15小题；每小题2分，满分30分）

阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项

A

Amid the coronavirus outbreak, the U. S. Department of Homeland Security recommends having at least a two - week supply of water and food.

Potatoes

Shelf life：2 to 5 weeks if stored in a cool, dry, dark place

Yukon Gold, red, and fingerling potatoeswill last from two to three weeks. Larger white potatoes can last for three to five weeks. Sweet potatoes have about the same shelf life. Don't store them next to onions, however. The two might go together well in cooking, but raw, each gives off gases and moisture that might cause the other to spoil faster.

Tea

※Shelf life：6 to 12 months past "sell - by" date

Dried tea leaves, whether loose (in a sealed container) or in teabags (in an unopened box) can easily last a year or more if they' re not subjected to damp or humidity. However, the tea does tend to lose flavor over time.

Peanuts

● Shelf life：1 to 2 months

Peanuts in their shell, especially when kept cool and dry, are perfectly happy in the cupboard for as long as two months.

Canned fruits and vegetables

● Shelf life：1 to 2 years past "sell - by” date

Canning is an extremely efficient means of preserving food. Generally speaking, if canned foods aren't subjected to extreme heat, their contents should stay good for two years or more. Be aware, however, of dented cans or those with swollen tops, which may indicate the presence of bacteria inside.

1. Which can go bad faster if stored with onions?

A. Potatoes.

B. Tea.

C. Peanuts.

D. Canned fruits and vegetables.

2. What is special about tea?

A. The flavor of tea can always remain the same.

B. Tea leaves are better to be preserved in an open jar.

C. Tea leaves should be kept away from the state of being wet.

D. The maximum length of time that tea can be stored is 6 months.

3. What may shorten the "sell - by” date of canned foods ?

A. Shapes of cans.

B. Categories of foods.

C. Decline of the temperature.

D. Exposure to high temperature.

B

Scientists often compare coral reefs(珊瑚礁) to underwater rainforests, yet unlike the leafy plant base of a forest, corals are animals. The soft creatures are naturally half-transparent and get their brilliant color1 from algae(藻类) living inside them. When corals experience stress from hot temperatures or pollution, theyhaltthe interdependent relationship with algae, typically pushing them out and turning white. Corals are still alive when they are white, but they're at risk and many eventually die, turning dark brown.

Scientists around the world are looking for means to protect and maybe increase corals. One common option is to create more protected areas — essentially national parks in the ocean. Beyond nature preserves, some conservationists are looking to more hands-on methods. One research center in the Florida Keys is exploring a form of natural selection to keep corals remaining. The reef system in the Keys has been hit hard by climate change and pollution, which is especially tough, because corals there help support fisheries worth $ 100 million every year.

To keep the wild ecosystem alive, Erinn Muller, the center's director, and her team are harvesting samples of the corals that survived the environmental stress naturally, keeping them to make them reproduce, and then reattaching them to the reef. They have 46,000 corals on plastic frames under the sea. So far, the center has regrown over 70,000 corals from five different species on damaged reefs.

In The Bahamas, Ross Cunning, a research biologist at Chicago's Shedd Aquarium, focuses on corals with genes that could make them natural candidates for restoration projects. He published a study of two Bahamian reefs, one that survived an extreme 2015 heat wave, and one that didn't. "We think their ability to deal with these higher temperatures is built into their genes," says Cunning. There's evidence of corals evolving more quickly to resist rapidly warming climate. The big question scientists need investigate, adds Gunning, is how much more heat corals can adapt to.

4. What does the underlined word "halt" in the first paragraph mean?