单选题This kind of work is ______ me.

单选题I didn't know it then, but this disruptive way of reading started with the very first novel I ever picked up.

单选题Perhaps the most familiar plant movement belongs to one species of mimosa called the sensitive plant. Within seconds, it can lower its leaves and make its tiny leaflets close up like folding chairs. This movement is thought to be initiated by electrical impulses remarkably similar to nerve signals in animals. But without the animals' sophisticated motion machinery, the mimosa has had to be creative in devising a way to move. For motion, the plant depends on tiny, bulb-shaped organs located at the base of each leaf stalk and leaflet. Called pulvini, these organs hold the plant parts in place. When the mimosa is stimulated—say, by a crawling insect or a sudden change in temperature—an electrical impulse sweeps through the plant. This causes potassium and then water to be shifted from certain cells in the pulvini to others, quickly turning one side of the organs flaccid. Because the pulvini can no longer support the leaves and leaflets, this shift results in a corresponding change in their position.

单选题One ought ______ for what one hasn't done.

单选题What is the author' s opinion on the supposition that the homeless are primarily the former residents of mental hospitals?

单选题They are always ready to ______ heavy responsibilities.

单选题In the club she found herself sitting______a well-known TV personality.

单选题Katherine: Linda! I haven' t seen you for ages. How are yon?Linda: Fine. And you?Katherine: Pretty good. How' s Frank?Linda: Oh, don't you know? We got divorced two years ago.Katherine:______

单选题______ has finished the work ahead of time will be rewarded though we don"t know who it will be.

单选题 How I wish every family ______ a large house with a beautiful garden!

单选题Equipment not ______ official safety standards has all been removed from the workshop.

单选题I (agree) you (on) (that) (point).

单选题Because time in India is conceived statically rather than dynamically, Indian languages emphasize nouns rather than verbs, since nouns express the more ______ aspects of a thing.

单选题The remnants of Roman Empire can be found in many countries in Asia, Europe, and Africa.

单选题Raising children, in the author's opinion, is______.

单选题A: We each have our own desk and dresser, but we'll have to share the bookcase and the closet. B: ______.

单选题 (While) schools developing online curricula try to strike (a balance) between profits and prestige, many educators (are confusing) about their role in this (digital world).

单选题Tom looks so pale today. He ______ ill. A. must be B. had to be C. should be D. shall be

单选题Why is social behavior difficult to change?

单选题In learning English, many students ___________ an e-dictionary to a paper one.