Preserving more habitats for China’s giant pandas is providing a giant payoff.    1    (save) the giant panda from dying out isn’t just good for the panda, but it’s also good for economy, a few analysis by    2    international team of scientists shows.

The results,    3    (publish) in the magazine Current Biology, stress the economic benefits that go hand in hand with environmental protection. Giant pandas are one of the    4    (rare) species around the world. But pandas fell on hard times in recent decades, thanks largely    5    human encroachment (侵入). In 1980 alone, many habitats were destroyed artificially, and in 1990, their habitats covered only 12,340 square kilometers,    6    is a major threat to the pandas in large part because bamboo, their main food source, is so low in nutrients that they must wander a lot of land in order to find and eat enough of it.

Because of this, Chinese officials began making significant efforts to save the panda from    7    (extinct), establishing more reserves and increasing the reserve area three times. Panda numbers    8    (gradual) began to recover, hitting 1,596 in 2000 and 1,864 in 2010.

“    9    is clear that society’s investment (投资)    10    (start) to pay off so far in terms of panda population recovery,” the study authors wrote.

The Internet makes shopping at home convenient. However, for many, the attraction of shopping can turn into     1     addiction. Experts believe there is a danger that online shopping can develop into a mental illness.

Researchers from the Hannover Medical School have termed the illness “Buying Shopping Disorder” (BSD). The researchers say this condition should be recognized by the medical profession as an illness and should not     2     (simple) be classed as one of     3     (vary) “impulse control”(冲动控制) disorders. Dr. Megan said: “It really is time to accumulate further knowledge about BSD on the Internet.”

Last month, Dr. Megan and her team     4     (carry) out a research on earlier studies on shopping. Their research focused on 122 patients     5     sought treatment for BSD. Dr. Megan said five percent of people might suffer     6     BSD. Younger people are more likely     7     (develop) it. They also have greater levels of     8     (anxious) and depression. People with BSD exhibit negative behaviors. These include     9     (spend) large amounts of money on things they don’t need, keeping and never using things they order, buying things for instant satisfaction, and ending up in debt. BSD can destroy     10     (they) marriages, relationships and mental health.

Did you grow up in one culture, your parents came from another, and you are now living in a     1     (total) different country? If so, then you are a third-culture kid.

The term “third-culture kid”     2     (use) in the 1960s for the first time by Dr. Ruth. She first came across this phenomenon while     3     (research) North American children living in India. In general, third-culture kids benefit     4     their intercultural experience and they often reach excellent academic results.

Yet many     5     (difficulty) may arise from this phenomenon. Third-culture kids may not be able to adapt     6     (they) completely to their new surroundings. Also, they often find it hard     7     (develop) new friendship. Additionally, for a third-culture kid, it is often     8     (easy) to move to a new country than to return to his homeland. For example, after living in Australia for many years, Louis finally returned to the country     9     she was born. She didn’t know anything about current TV shows     10     fashion trends. And she didn’t share the same values as other teens of her age.

LONDON, England—London’s “Big Ben” hour bell will be silenced for four years. After almost 157 years of service, the famous clock, which     1    (locate) at one end of the Palace of Westminster, needs repairs. The keeper of the London’s clock made this     2    (know) on Monday.

Londoners were     3     (happy) about the news. There was sadness on Twitter, with many saying that it is important when Big Ben rings each hour and     4     they will miss it when suddenly     5     (find) it’s not there anymore. “It will be very sad, but it needs to be done,” said the keeper. “It is time for Londoners to make some adjustments     6     the silence. They are going to have to depend on looking at     7    (they) watches and phones, instead of listening to the bongs.”

The clock keeper also announced Big Ben would not be     8    (complete) silenced during the repairs and would strike the hour for “important national events”, such as New Year’s Eve and Remembrance Sunday.

Big Ben’s last rings will happen     9     noon on Monday, August 21. Large crowds are expecting     10     (hear) Big Ben’s last rings. The repairs should be finished sometime in 2021, and keep the clock and tower safe for generations.

Babies are great and lots of fun．We all love babies and we need babies，too．Many countries don't have enough of them．That's a big problem．

Most babies grow up to become workers．As the number of workers    1     （grow），a country can produce more things．That often means people's lives become easier and more    2     （comfort）．But without enough babies，a country    3    （gradual） get old．Many countries provide services for    4     （they） people like health care．These services    5    （pay） for by young working people．But they are mostly used by old people    6     aren't working any more．Without enough young people，countries can't afford these things．

Countries are dealing    7     these problems in different ways．Many countries are encouraging people    8     （have） more babies．Raising children is expensive，so some countries give families extra money．Sometimes countries change rules    9     it is easier for mothers to study and work．Others are welcoming immigrants （移民） from other    10    （place）．How do you think this problem should be solved？