下列句子中，加线的词语使用恰当的一项是（      ）

阅读下列短文，从所给的四个选项中，选出最佳选项。

    Borrowing to start a business is not easy. Getting a bank loan, particularly for a new small business, is like going through the eye of a needle.

    Banks favor established-business people with a solid credit rating and a large bank account. They should also have experience in the business they propose to enter, and offer well-prepared business plans that show the ability to repay the loans. If you are not such a person, then you need to double your preparations to convince the banker to lend you that much needed start-up capital（资金）. If your business is new and small, bankers will need to know as much as possible about you and your business. However, many small business owners often make the mistake of not being well prepared when going to the bank to apply for the loan. Surprisingly, many loan applicants don't even have the slightest idea how or when they intend to repay the money they request. Often they don't even know how much money they need. When asked how much money they want to borrow, many people give these two common responses: “How much money can I get?” and “As much as possible.” Is it any wonder that lenders say no? So the most important thing is do your homework before you ask for a loan.  

为探究绿色植物的生理活动，某兴趣小组设计并完成了以下实验步骤：

①按如图连接好实验装置，关闭阀门M、N后放到黑暗处一昼夜．

②将整个装置移到适宜的阳光下照射数小时（光照前阻断叶片间有机物的运输）

③打开阀门M，将透明塑料袋中的气体通入甲试管，待气体收集满后，打开橡皮塞，用带火星的木条检测．

④打开阀门N，将黑色塑料袋中的气体通入乙试管进行检测．

⑤取下叶片A、B，进行脱色处理，漂洗叶片后滴加碘液，观察颜色变化．

请分析回答：

人和动物体的基本组织有____ 、____ 、____ 、____ 四种。