1 . Directions: After reading the passage below, fill in the blanks to make the passages coherent and grammatically correct. For the blanks with a given word, fill in each blank with the proper form of the given word; for the other blanks, use one word that best fits each blank.

When scientists accidentally killed     1    turned out to be the world’s oldest living creature, it was bad enough. Now, their mistake has been worsened after further research found it was even older – at 507 years.

The ocean quahog, a type of deep-sea clam, was dredged (捕捞) alive from the bottom of the North Atlantic near Iceland in 2006 by researchers. They then put it in a fridge-freezer,     2    is normal practice, unaware of     3    age. It was only when it was taken to a laboratory     4    scientists from Bangor University studied it and concluded it was 400 years old.

The discovery made it into the Guinness Book of World Records. However, by this time, it was too late for Ming the Mollusc(软体动物),     5    (name) after the Chinese dynasty     6    its life began. Unfortunately, researchers who calculated Ming’s age killed it instantly by opening its shell.

The researchers opened the ancient clam up to judge its age by counting growth rings inside. But the rings were so close together     7    scientists ended up having to count the rings on the outside to be accurate,     8    (lead) CBS journalists to point out that if scientists had just started there, Ming could have lived on. Now, after examining the quahog     9    (closely), and     10    (use) more advanced methods, the researchers have found the animal was actually 100 years older than they first thought.

Dr Paul Butler, from the University’s School of Ocean Sciences, said: “We got it wrong the first time and maybe we were a bit hasty publishing our findings back then. But we are absolutely certain that we’ve got the right age now.” The mollusc was born in 1499 – just seven years after Columbus discovered America and before Henry VIII had even married his first wife, Catherine of Aragon in 1509.

2 . Otters, are cute, this no one can deny. They have big eyes, short and flat noses and claws (爪子) like tiny hands. They look even cuter when they wear hats and throw food balls into their mouths as if they were bar snacks, like Takechiyo, a pet otter in Japan. Documenting Takechiyo’s funny behavior has earned his owner nearly 230,000 followers on Instagram, a photo-sharing app.

Takechiyo’s fame reflects a craze across east and South-East Asia for keeping the cute creatures as pets. Enthusiasts in Japan visit cafés where they pay to hug them; Indonesian owners parade their pets around on leads or go swimming with them, then share their pictures online. But these enjoyable photos mask a trade that is doing a lot of damage. Even before they became fashionable companions for humans, Asia’s wild otters faced plenty of threats. Their habitats are disappearing. They have long been hunted for their coats, or killed by farmers who wish to prevent them consuming fishes. The pet trade, which began picking up in the early 2000s but appeared to speed up a few years ago, has made things worse. The numbers of wild Asian small-clawed otters and smooth-coated otters, two species that are in highest demand, have declined by at least 30% in the three decades to 2019.

The international agreement that governs trade in wildlife, known as CITES, now prohibits cross-border trade in these species. But laws banning ownership are often poorly implemented, as in Thailand, or full of holes, as in Indonesia. And the otter-keeping craze has been dramatically improved by the internet, says Vincent Nijman of Oxford Brookes University. In 2017 TRAFFIC, a British charity that monitors the wildlife trade, spent nearly five months looking at Facebook and other social-media sites in five South-East Asian countries. During that time, it found around 1,000 otters advertised for sale online.

In any case, otters do not even make particularly good pets. Every year the Jakarta Animal Aid Network, a charity in Indonesia’s capital, receives some ten otters from people who have struggled to look after them. Faizul Duha, the founder of an Indonesian otter-owners’ group, admits that his two animals emit a “very specific” (read: fishy) smell. They bite humans and chew on furniture. Their scream can be heard blocks away. And their cages need cleaning every two-to-three hours. That is how often they empty their bowels (肠道).

1. The function of the first paragraph is to ________.

A．present the main idea	B．introduce the main topic
C．set readers thinking	D．illustrate the writer’s point

2. According to the passage, which of the following mainly drives the otter trade?

A．The demand for pet otters.	B．The disappearance of otters’ habitats.
C．The popularity of otter coats.	D．The decrease of fishes.

3. It can be inferred from the passage that ________.

A．the laws that prohibit cross-border trade are strict in Asia

B．social media plays a significant role in the online otter trade

C．people usually give up otters because they are endangered

D．otters are suitable pets because they are friendly to humans

4. The purpose of the writing is to ________.

A．advertise for a photo-sharing app

B．introduce the popularity of pet otters

C．discourage the illegal otter pet trade

D．describe the characteristics of otters