题干

外界的空气寒冷、干燥并混有灰尘和细菌,通过鼻腔后变得温暖、湿润、清洁,鼻腔中与之相适应的结构是(  )

①鼻毛     

②鼻腔黏膜      

③鼻腔黏膜中的嗅细胞     

④鼻腔黏膜中的毛细血管

A:①②③

B:④②①

C:②③④

D:①③④

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答案(点此获取答案解析)

B

同类题2

任务型阅读

    Tiny Tomatoes

    Tomatoes come in a variety of sizes, shapes and colors. And the little tomatoes are some of the most fun to grow and are perhaps the most rewarding. 
    Little tomatoes are classified into plum, cherry, grape or currant (醋栗) tomatoes.   ____ Plum tomatoes are the largest of the groups listed, and currant tomatoes are the smallest. There are also differences in color, flavor and skin thickness, but these differences are more relative to specific varieties.____

    Plum, cherry and other small tomato types are fun to grow because they always produce abundant crops of flavorful fruit. They are fun to snack on while working in the garden or while daydreaming about working in the garden.____They are typically sweeter than large tomatoes, and little tomatoes contain less juice and fewer seeds than large tomatoes.

    To grow little tomatoes, select a site that receives at least six to eight hours of full sun per day. Use a large container set in a sunny spot if a sunny planting site is otherwise unavailable.”

    ____You could also plant seeds, but already-started plants will provide fruit much more quickly. Water infrequently to help plants grow deep roots before the heat of summer arrives.

    Harvest fruits when they are ripe. They will generally slip from the plant at this point.____ Store harvested fruit indoors and unrefrigerated as cool temperatures change the flavor.

A. The best time to grow tomato plants is March.

B. Differences in size matter most commonly here.

C. They are also influenced by growing conditions.

D. Then select plants from the garden center or farmers.

E. All of them are delicious and almost of the same size.

F. These are good additions to salads and cooked dishes.

G. But they should feel firm in your hand at the same time.

同类题5

阅读以下文言文,完成文后题目。
                                                                                              山水画卷
     (甲) 从小丘西行百二十步,隔篁竹,闻水声,如鸣佩环,心乐之。伐竹取道,下见小潭,水尤清洌。全石以为底,近岸,卷石底以出,为坻,为屿,为嵁,为岩。青树翠蔓,蒙络摇缀,参差披拂。
      潭中鱼可百许头,皆若空游无所依。日光下彻,影布石上,佁然不动;俶尔远逝,往来翕忽。似与游者相乐。
      潭西南而望,斗折蛇行,明灭可见。其岸势犬牙差互,不可知其源。
      坐潭上,四面竹树环合,寂寥无人,凄神寒骨,悄怆幽邃。以其境过清,不可久居,乃记之而去。
                                                                                                                      节选自《小石潭记》
     (乙)于时冰皮始解,波色乍明,鳞浪层层,清澈见底,晶晶然如镜之新开而冷光之乍出于匣也。山峦为睛雪所洗,娟然如拭……            

                                                                                                                      节选自《满井游记》