在生物实验课上，小红拔了根头发放在显微镜下观察，想了解其结构，结果令她很失望，这

Australia has a lot of lovely animals. The most famous one is the kangaroo(袋鼠).
The kangaroo is the symbol of Australia. They have large eyes and ears. They don’t walk. They jump. They use their strong back legs. They can jump up to 74 kilometers per hour. They can go over nine meters in one jump.
Kangaroo mothers have pouches(育儿袋)to carry their babies. The babies stay inside to get milk and keep warm. Kangaroos are everywhere in Australia. They are on TV, in books and in the shops. The government even wants to put them on passports.
There are about 20 to 25 million kangaroos in Australia. That’s more than the number of people in the country! Some kangaroos go hungry because there is not enough to eat .They break into farms for food. Farmers are very angry with them. To help the farmers, the Australian Government kills some kangaroos each year.

	Kangaroos
Looks	The 小题1: _______and 小题2: _______are large.
Food	Not enough to eat. Some go小题3: ________.
Numbers	There are about 20 to 25小题4: _____________.
Life	Some kangaroos are小题5:______by Australian Government to help the farmers.