如果用粗缆连接两台集线器，构建10BASE-T以太网，则两台机器的最远距离可达 __

Recently, a reader asked me about the dangers that pets can face around the house. So, I visited my local animal       last weekend and got some advice to share about how we can make our homes       for our pets.
When I arrived, several pets and their     were in the waiting room. Mr. Smith, with a cat, chatted with me. "My cat will be       for an uncomfortable stomach in a minute," he said. "My children gave       a bowl of milk. However, if she is given milk, she will get a stomachache.”
Just then, the vet (兽医) walked over to us. “Yes, Mr. Smith is      . Only a few people know this, but milk mustn't be fed to cats     some cats can't take it in easily," the vet said. "Other human foods are bad for pets   . For example, if a dog eats chocolate, it will become    ."
I asked the vet what other       there are for pets around the house. "Well,” she replied, “we should not     small things, such as batteries, lying around as they can be eaten by pets. Last month, a small cat was brought     because it had eaten a button which was on the floor without being noticed. "
Before I left, the vet    me some more important advice to share with you:
You should keep all medicines and cleaning products away from pets. Also, pets, such as cats and dogs, sometimes will       their hair if they are unwell, If your pet looks unwell or is acting unusual, you should      your vet immediately. Follow the advice and you can keep your pets safe.

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小题2:	A．warm B．safe C．clean D．beautiful

小题3:	A．owners B．visitors C．teachers D．actors

小题4:	A．paid B．chosen C．treated D．returned

小题5:	A．it. B．me C．him D．her

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小题7:	A．until B．though C．while D．because

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小题10:

A．secrets B．changes C．dangers D．mistakes

小题11:

A．buy B．use C．leave D．collect

小题12:

A．in B．off C．on D．down

小题13:

A．offered B．posted C．wasted D．accepted

小题14:

A．colour B．keep C．lose D．sell

小题15:

A．point to B．ring up C．hear from D．look after