Judging from a large amount of evidence presented, we can safely _________ the Three Gorges Project will change the lives of a great number of humans forever.

In high pace of life, we can see a _________ flow of cars running in the streets, high ways and subways every day.

Speaking of Utopia, a popular explanation is that it’s an ideal world, or a perfect final _________.

This extra effort makes a lasting _________, the kind that often results in some fortune with extra business.

An interesting suggestion for measuring the atmosphere around Mars has been _________, thus leading a heated discussion among the scientists.

 I’m afraid that your arrival at present is not quite _________, depending on the embarrassed situation here.

How can these experts just choose to keep the “right” part of the history but _________ the “wrongs” without respecting the history itself?

_________ being efficient and reliable, the newly arranged system even made no sense about the development of Chinese Football Association.

My grandparents were married for over half a century, and played their own special game from the time they had met each other. The goal of their game was to write the word "shmily" in a     31    place for the other to find. They took turns leaving "shmily" around the house, and as soon as one of them     32    it, it was their turn to hide it once more.

There was no     33    to the places where "shmily" would appear. Sometimes, "Shmily" was written in the     34    left on the mirror after a hot shower, where it would reappear bath after bath.     35   , my grandmother even unrolled an entire roll of toilet paper to     36    "shmily" on the very last sheet.

It took me a long time before I was able to fully     37    my grandparents' game. It was     38    their funny little game; it was a way of life. Grandma and Grandpa held hands every chance they could. They    39    kisses as they ran into each other in their tiny kitchen. Before every meal they bowed their heads and gave their     40   : a wonderful family, good fortune, and     41  .

But there was a    42   cloud in my grandparents' life: my grandmother had breast cancer, which had first appeared ten years earlier. As always, Grandpa was with her every

    43    of the way. He comforted her in their yellow room, painted that way     44____    she could always be surrounded by sunshine, even when she was too     45    to go outside.   Then one day, what we all     46    finally happened. Grandma was gone.

"Shmily." It was written in yellow on the pink ribbons of my grandmother's funeral bouquet. As the crowd     47    and the last mourners (哀悼者) turned to leave, my aunts, uncles, cousins and other family members     48    and gathered around Grandma     49   . Grandpa stepped up to my grand-mother's casket and,     50    with sorrow, he began to sing to her. Through his tears and grief, the song came, a deep and throaty lullaby (摇篮曲).

SHMILY: See how much I love you.

Dogs can be worried and pessimistic just like people, researchers report in a new study in Current Biology. And they aren’t talking about basset hounds (短脚猎狗): those dogs just look as if they expect the worst.

What the scientists say is that dogs that exhibit anxiety when left home alone by their owners may have bigger problems — they may be in a permanent bad mood.

This pessimistic outlook may not otherwise be easily apparent in a dog’s other characteristics, like running speed or learning ability, the study reports.

Dogs are similar to humans in the role that emotional state plays in decision making, said Michael Mendel, a veterinary scientist at the University of Bristol and the study’s lead author. The study’s researchers looked at 24 dogs in shelters in Britain.

They placed the dogs in isolated settings and observed their reactions — many barked, jumped on furniture and scratched at the door.

Then they placed bowls in two rooms. One bowl contained food, while another was empty. After training the dogs to understand that bowls can sometimes be empty, and sometimes full, they began to place bowls in ambiguous locations.

Dogs that quickly raced to the locations were more optimistic, and in search of food. Those that did not were deemed pessimistic.

The more separation anxiety a dog expressed while in isolation, the more likely the dog was to have a pessimistic reaction, the researchers found.

The study carries an important message for dog owners, Dr. Mendel said.

Dogs that express serious anxiety when alone may need treatment, as it could be a sign of unhappiness and instability.

1.This passage can be classified as _________.

2. In the study, many dogs barked, jumped and scratched because __________.

3.According to Dr. Mendel, which statement is true?

4.What can we learn from the passage?