Global warming could make humans shorter.Scientists claim to have found evidence that it caused the world's first horses     1     (become) smaller nearly 50 million years ago.In fact，a team from the universities of Florida and Nebraska says,     2     has found a link between the earth heating up and the size of horses，during the last time the world heated up.The scientists used fossils to follow the evolution of horses from their earliest     3     (appear)56 million years ago.As temperatures went up，their size went     4    . The scientists say that the current warming could have the same effect     5     mammals and could even make humans     6    (small)．“Horses started out small，about the size of a small dog.What's     7    (surprise) is that after they first appeared，they then became even smaller and then dramatically increased in size，and that     8     (exact)corresponds to(符合)the global warming event，followed by cooling.”“It had been known that mammals     9     (be) small during the last warm time，    10     we hadn't realised that temperature specifically was driving the evolution of body size，”Dr Bloch said in the Science journal.

As is known to all, art     1     (influence) by the customs and faith of a people. Styles in Western art have changed many times.

In the 5th century, the art of the Middle Ages came into being and the main aim of     2     (paint) was to represent religious themes.     3     a result, some pictures at this time were full of religious symbols,     4     (create) a feeling of respect and love for God. During the   Renaissance,   people   began   to concentrate     5     (little) on religious themes and adopt a more humanistic attitude     6     life. In the late 19th century, some painters became the Impressionists. And they were the first painters     7     (paint) outdoors. Paintings can reflect the     8     (develop) of civilization, and it is interesting to predict     9     styles of paintings there will be in the future.     10     not try to visit some art galleries to appreciate different styles of paintings?

Up to 82 percent of children with healthy mothers are not easy to be obese（肥胖的）, according to research. A mother,     1     has a healthy weight, exercises regularly, eats a healthy diet, doesn’t smoke and only     2    (drink) wine in moderation, is significantly less likely     3    (have)a fat child, scientists say.

And research suggests it could be more to do with nurture(养育)    4     nature, as a mother's lifestyle appears     5    (direct) linked to the health of her child. When both mother and child follow a healthy lifestyle, the risk of obesity     6    (reduce)even more, the study of more than 24,000 children found.

The study examined the medical history and lifestyles of more than 24,000 children aged nine     7     fourteen, born to almost 17,000 women in the US. Researchers looked at the link between overall mother health and likelihood of a child     8    (be) obese.

The mother's health was judged on her height-to-weight ratio(比例), her diet, amount of physical     9    (active), smoking status and how much alcohol she drank. A healthy weight and diet, regular exercise, no smoking and moderate drinking all reduce the chance of a woman having     10     obese child.