②为了探究声音是怎样传播的，小丽同学用如图所示的装置进行探索．把正在发声的闹钟放在玻璃罩内，闹钟和罩的底座之间垫上软的泡沫塑料．逐渐抽出罩内的空气，她听到的闹钟声音逐渐变小，最终消失．这种现象表明声音不能在 ____ 中传播，本实验用到了一种探究物理规律方法是 ____ （控制变量法．转换法．实验推理法）．

①光合作用需要二氧化碳

②光合作用需要光

③光合作用的场所是叶绿体

④光合作用放出氧气

⑤光合作用能制造淀粉

Li Ming is staying with the Wang's family for the weekend.
Today it is warm and fine. The family are having dinner in the garden. They often have dinner in the garden on a warm and fine spring day. Now Mr. and Mrs. Wang are sitting at the table with Li Ming under a tree.
"It's great to have dinner out here on such a lovely day," Mrs. Wang says. "What's the weather like in your hometown, Li Ming?"Mr. Wang asks. "It's not very warm in spring. But I like the spring there best." "Help yourself to some cakes, Li Ming," Mrs. Wang says. "Thanks," says Li Ming. "The cakes are very nice. I enjoy the dinner very much."

亚洲季风气候的形成，主要受________影响（    ）