Cats' sense of smell is very important to their health. Many cat owners have seen a cat smell the food and refuses it. Careful sniffing tells the cat if something is safe to eat.
     Cats have a pair of vomeronasal organs(犁鼻器) on the roof of the mouth. When the cat wants to sniff, she will breathe the air in through her mouth. At this moment, she will often squint(斜视) her eyes and maybe even flatten(使…平坦) her ears. This makes her look like she is making faces. The vomeronasal organs will then analyze the smell---almost as if the cat is tasting the smell.
      When you come home from outside the house, your cat can smell what you had for lunch and for a mid-afternoon snack. She can smell the people you shook hands with and your neighbour you stopped to talk to and hug. She can smell the grass brought under your shoes as you took a shortcut across the lawn. Your cat's sense of smell is so good that she can smell difference between a gallon of water with a teaspoon of salt in it and plain water. In comparison, we think of salt as completely tasteless.
      Cats have scent glands(臭腺) on each side of the forehead, on the chin, the lips and next to the tail. When your cat rubs up against your hand, your leg, the sofa, and your bed, she is leaving her scent in those things. She will then use her sense of smell to recognize “her” things, people and even other pets in the home.
       If you want to have fun with your cat’s sense of smell, take some small bits of different things, such as a bit of chicken, some flowers and some fish. Place each different scent under a piece of paper towel(so your cat cannot see any of them) and encourage your cat to investigate and find what kind of food she likes to eat best.

历史事件一定程度上改变了历史的进程。根据提示写出与之相应的历史事件。

①使俄国走上资本主义发展道路的改革是：____

②第一次世界大战后，它是交战国缔结和约、战胜国分赃的所谓“和平会议”，此会议是：

____

③美国实施了《全国工业复兴法》等措施，逐步摆脱危机的改革是：____

④标志着第二次世界大战爆发的历史事件是：____

    In northern Scotland there is a long deep lake called Loch Ness.  More than 200 meters deep, it is the largest lake in the UK.  People  say  a  big monster (怪兽)  lives in its dark, cold waters. It weighs more than 1,000 kilos and is at least ten meters long. Some people say it has a head like a horse. Others say it looks like a snake. Many people travel to Loch Ness to look for this strange monster, but only a few people have seen it. At least, they say they have seen it.

    The Loch Ness Monster is a famous legend (传说). The first story about a monster in Loch Ness was told over 500 years ago, but the legend of the monster spread widely only in the twentieth century. In 1933, a husband and wife reported that they saw a big monster in Loch Ness. Several people have taken photos, but at least one of them was a hoax (骗局). During the 1960s, a team was formed to look for the monster. They took many photos and made movies, but they were never able to find a monster.

    There is no real fact that a monster lives in Loch Ness, but there is also no fact that one doesn't live. One thing is true about Loch Ness: there are a lot of tourists there.