后组筛窦的开口于（）。 A.上鼻道 B.中鼻道 C.下鼻道 D.蝶筛隐窝 E.鼻咽部

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Fruit also makes up a flowering plant. It carries the seeds . The purpose of fruit is to protect a plant’s seeds and help them get spread about. Wind and water spread seeds .So do animals when they eat fruit and drop the seeds .
There are two main types of fruit: fleshy and dry. Fleshy fruits are soft and juicy , the way we usually think of fruits . Peaches ,plums ,and apples are all fleshy fruits . Dry fruits are thin and hard . Grains like wheat and rice , or nuts are dry fruits.
You’ve eaten seedless oranges and grapes . How can they be fruits? It’s because people have changed the way they grow fruit. They can now grow seedless fruit . Seedless fruit comes from special plants called hybrids(杂交生物体) . A hybrid is made by combining two varieties of a fruit to form a new variety . This hybrid grows and produces seeds . But the plants grown from these seeds are seedless . These plants cannot reproduce themselves.
A tomato is a vegetable , right? No , it’s actually a fruit . Other food we think of as vegetables—such as squash , peppers ,and eggplant—also are fruit . They’re fruit because they carry seeds and develop from flowers . Here’s another surprise . Scientists classify the tomato as a berry(浆果) . In addition , they don’t consider some fruits we call berries to be true berries because a berry is normally a type of fruit with a lot of seeds inside it . Technically , a strawberry , isn’t a berry , because it has its seeds on the outside . The red part is just the tip of the strawberry stem that’s enlarged.
Fruits are a source of nourishing(滋养) substances that keep us alive and healthy . For example , they contain many vitamins , especially vitamins A and C, and many minerals . They also provide fibre for a healthy digestive system and carbohydrates that the body needs to make energy.

Title：小题1:
Basic knowledge	Being小题2:      of a flowering plant and carrying seeds. Protecting a plant’s seeds and helping spread them about. Mainly小题3:     on wind , water and animals to spread.
	Fleshy fruit :Juicy and小题4:       , like peaches , plums ,apples ,etc . Dry fruit : Thin and hard , like wheat ,rice , nuts ,etc .
Fruit小题5:   seeds	Coming from a 小题6:     ,which is made by combining two kinds of fruit to form a new kind.
Some surprises	Tomato , squash ,peppers and eggplant are fruits because they carry seeds and develop from 小题7:    . Some fruits like strawberry aren’t technically berries because they have seeds on the 小题8:      .
Being 小题9:    to humans	Keeping people alive and小题10:      . Providing vitamins , fiber and carbohydrates.