2 . Because of a record drought, the Amazon River drops to the lowest level ever recorded. Smaller river systems that feed into the Amazon River have been drying up, leaving boats stranded (搁浅) and people in remote villages with very little food and water. The port of Manaus, where the Amazon River meets with the smaller river Rio Negro in Brazil, recorded 13.59 m of water on Monday compared to 17.60 m a year ago. That was the lowest level since records began in 1902. It was said the drought had affected 481,000 people so far.

The Brazilian government has blamed the drought on the El Nino climate pattern, which has brought hotter and drier weather. The government said it was expected the drought would last until at least December, when El Nino’s effects are forecast to reach the highest point.

The drought has made it hard to access food, drinking water and medicines, which are usually transported by river. After months without rain, some rainforest villagers were relieved when a Brazilian charity delivered supplies to their community. Some areas could still be reached by canoe, but many boats hadn’t been able to bring supplies along the river and a lot of supplies were being delivered by tractor. The drought also affected the cleanliness of the village’s drinking water. As a result, many children were getting ill and often having fever. Villagers said it wasn’t very good for them because they were practically isolated (隔绝).

El Nino has also affected the animals of the river. More than 100 endangered river dolphins are thought to have died because of high water temperatures. The Amazon rainforest represents about half of the remaining rainforest left on Earth and is home to more than one million species, or a third of all known land plants, animals and insects. About 150—200 billion tons of carbon is stored in the Amazon rainforest, making it important for the health of the whole planet.

1. What can we learn from paragraph 1?

A．Water level in Manaus hit its lowest in over a century.

B．The Amazon River has been drying up and disappearing.

C．It is important for the global fight against climate change.

D．It forces villagers living in the rainforest to leave their homes.

2. What is the local villagers’ attitude to their living conditions?

A．Optimistic.

B．Concerned.

C．Content.

D．Uncaring.

3. What can we infer about the Amazon rainforest from the last paragraph?

A．It contains almost all of the world’s fresh， flowing water.

B．It will cause the widespread droughts around the world.

C．It is important for the global fight against climate change.

D．It forces villagers living in the rainforest to leave their homes.

4. Which of the following is a suitable title for the text?

A．The Ecosystem of the Amazon Rainforest

B．The Importance of the Amazon River

C．The Amazon River and Its Rainforest

D．The Lowest Level of the Amazon River

3 . 听下面一段较长对话，回答以下小题。
1. What causes the party to be put off?

A．An unexpected meeting.

B．The terrible weather.

C．A changed plan.

2. When was the party supposed to be held at first?

A．This Saturday.

B．This Sunday.

C．Next weekend.

7 . Under a midday summer sun in California’s Sacramento Valley, rice farmer Peter Rystrom walks across a dusty and bare plot of land, dry soil crunching (碎裂) beneath each step. In a typical year, he’d be walking across green rice fields in inches of water. But today the soil is dry and baking in the 35℃ heat. It hasn’t rained for 4 weeks in a row.

“Climate change is expected to worsen the state’s extreme swings in rainfall,” researchers reported in Nature Climate Change in 2018. Low water levels in rivers have forced farmers like Rystrom, whose family has been growing rice on this land for four generations, to reduce their water use.

“If we lose our rice crops, we have to deal with severe food crisis. Climate change is already threatening rice-growing regions around the world. This is not a future problem. This is happening now,” says plant geneticist Pamela Ronald of the University of California, Davis, who identifies genes in rice that help the plant stand up to dryness, disease, flood, etc.

To save and even boost production, rice growers, engineers and researchers have turned to water-saving irrigation (灌溉) routines. Building canal systems and reservoirs (水库) can help farmers dampen their fields. But for some, the solution to rice’s climate-related problems lies in enhancing the plant itself. They hold that establishing rice gene banks that store hundreds of thousands of rice varieties ready to be bred into new, dryness-tolerant varieties is more practical and effective. Solutions may be hidden in the DNA of those older breeds.

Three decades have passed since its initial development, and some researchers are looking beyond the genetic variability preserved in rice gene banks, searching instead for useful genes from other species, including plants and bacteria. But picking genes from one species and putting them into another, or genetic recombination, remains debatable. The most famous example of genetically changed rice is Golden Rice (GR). “Looking ahead, it will be crucial for countries to embrace GR rice. But it will take time,” says Ismail, principal scientist at IRRI,

1. What problem does Rystrom have to deal with?

A．Thirst.

B．Drought.

C．Hot sun.

D．Dusty weather.

2. What can be inferred from Para. 3?

A．Downtrend of rice-growing areas is severe now.

B．Climate change is a threatening factor in the future.

C．Humans will face starvation if crop failure happens.

D．Food crisis is a common occurrence around the world.

3. What’s the purpose of setting up gene banks?

A．To store as many seeds as possible.	B．To cultivate climate-adapted varieties.
C．To improve the efficiency of breeding.	D．To show the technology of gene mapping.

4. What’s Ismail’s opinion about GR?

A．Favourable.

B．Impractical.

C．Disapproving.

D．Insecure.