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Again, the shark4 attacked. This time, however, the shark5 the glass and bounced off (弹回). The shark kept6 this behavior every few minutes but it failed. This7 was repeated several times over the next few weeks. Each time, the shark got less aggressive (侵略的) until the shark got8 of hitting the glass and simply stopped attacking.

Although the professor then took away the glass, the shark still didn't attack. The shark was trained to believe there was a barrier between the small fish and itself, so the fish swam freely, without9.

Actually, some people will10 trying after experiencing failure. However, you may become successful if you try one more time.

—_________, you need to be patient and practice more.

—I think so. Sleeping well can give us enough ________.

—Sounds great. Let's join in it together!

—Yes, it ________ over 10 years since it started.

—Yeah. Thanks a lot.

—How ________ his teacher is! She never gets angry.

—Yes, but we must use it ________. It should not do all the thinking for us.

要求：结构清晰，语言流畅，基调积极；字数：80 - 120 词。

In 100 BC, Su Wu was sent by Emperor Wu of the Han Dynasty to the Xiongnu as a messenger. The khan (可汗) offered Su Wu an important position, but it  (refuse). Then the khan decided to punish Su Wu for his refusal. He ordered Su Wu to live in  open pit (深坑) without any water or food. The khan thought that Su Wu would stop   (fight) against him.   his surprise, Su Wu survived by drinking melted snow and eating his sheepskin coat.

The khan's respect for Su Wu increased greatly as time went by, but he still refused to send him back to his homeland. So he said to Su Wu, "Since you will not accept   (I) offer, I will send you to a faraway place to look after rams (公羊)."

Su Wu then began to live an even  (hard) life.   the living conditions were very difficult, he never gave up his strong wish to return to the Han Dynasty. Nineteen long years later, the new emperor of the Han Dynasty finally saved him  (succeed).

Su Wu is one of the most famous   (hero) in Chinese history. His strong will and deep love for his country  (encourage) many people ever since.

Jennifer has great interest in wildlife, especially the ones living in wetlands.

Paul is an art lover and he wonders how people in his city lived in the past.

Tom is looking for a place that is perfect for hiking with his 5-year-old son.

Grace is an astronomy fan and she is crazy about exploring the universe.

Maggie enjoys camping and she hopes to take photos of beautiful sea views.

The days are longer, full of sunshine and bright with the promise of enjoying a more relaxing spring and summer with your loved ones. But if you want to enjoy your daytime, it's time to improve your sleep during the night-time. "Sleep problems endanger health and quality of life for up to 45% of the world's population," according to the World Sleep Society.

Sleep is one of the three keys to a healthier, longer life (the others are diet and exercise). . Here are the top five ways to improve your sleep and get some relax:

Create a sleep nest

Science tells us that we sleep better in cooler temperatures of about 60 to 67 degrees Fahrenheit (15℃ to 20℃).

Develop a routine

Set up a bedtime ritual by taking a warm bath or shower, reading a book or listening to soft music. You're teaching your mind to relax. And stick to it. Go to bed and get up at the same time each day, even on weekends or your days off. 

Cut the lights

Production of the sleep hormone melatonin (荷尔蒙褪黑激素) begins at dark. Research has found that the body will slow or stop it with light on, to get away from any light, even the blue light from your charging smart phone.

Refuse the wine

Don't turn to wine to make you calm or help you sleep. Your body needs to experience all three steps of sleep—light sleep, dream, and deep sleep—to fully repair itself.

Heavy and spicy foods may give you heartburn or other digestive problems, thus influencing your ability to get and stay asleep.

If you try these tips and can't seem to relax, or your sleep continues to worsen, be sure to reach out to your doctor or a mental health professional.