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解放思想的内涵是什么？

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Passage Five What produces a waterproof super glue, acts like a vacuum cleaner, and even teaches scientists about gene repair The humble little shellfish known as the mussel (贻贝)。 Mussels are found worldwide. Some live in the sea. Others inhabit freshwater streams and lakes. When you try to move a mussel from a rock, you will discover what an incredibly firm grip it has- a necessity if the mussel is to resist the sharp grab of a hungry seabird or the pounding waves of the sea. How does it manage to cling so tight When it choose a place to set up home, it pokes its tongue-shaped foot out of its shell and presses it against a solid surface. Special glands give off a fluid mixture of proteins into a channel that runs the length of the foot. The liquid quickly hardens into a fine, elastic thread about an inch long. Then a tiny pad-like structure at the end of this thread gives off some natural glue-like substance, the mussel lifts its foot, and anchor line number one is complete. These strategically placed threads form a bundle, which ties the mussel to its new home in much the same way that ropes hold down a tent. The whole procedure takes only three or four minutes. Imagine having a very strong glue that is non-toxic and so flexible that it can penetrate the tiniest holes and corners, sticking to any surface, even under water. Shipbuilders would welcome it for repairing vessels without the expense of dry-docking them. Auto-body workers would like a really waterproof paint that keeps the rust out. Surgeons would value a safe glue to join broken bones and to close wounds... The list of possible uses appears endless. However, scientists are not thinking of using the mussels themselves to produce this super glue. It would take some l0.000 shellfish to make just one gram of glue. So collection enough mussels to supply the world’s demand for super glue would wipe out the mussel population, many species of which are already endangered. Instead, American researchers have isolated and cloned the genes for five mussel glue proteins, and they are about to mass-produce them in the laboratory. However, the mussel is still one jump ahead. Only the mussel instinctively knows the exact blend of proteins needed for each kind of surface. Molecular biologist Frank Roberto has asked admiringly: "How are you ever going to imitate that" The waterproof super glue originates in ______

A. the mussel’s tongue-shaped foot
B. the channel of the mussel’s foot
C. the thread given off by the mussel
D. some glands in the mussel’s body

男の人はどうして昨日のパーティーに行きませんでしたか。

A. 病院にお見舞いに行ったからです。
B. 女の友達と会っていたからです。
C. 果物を買いに行ったからです。
D. プレゼントを買いに行ったからです。

简答题某地进行乡人大代表选举，一选区应选举代表3名。在各政党、各人民团体和本选区选民提名基础上，乡选举委员会分别征询有关方面意见，最后确定正式候选人3人。经过投票选举，获得参加投票选民过半数选票的候选人中，只有1人系原确定的正式候选人，另2人系选民自发投票选出的独立候选人。乡选举委员会认为，独立候选人非正式确定的候选人，因而不予确认其当选结果，决定进行第二轮投票另行选举。试问在整个选举过程中，乡选举委员会的行为违反了我国宪法和选举法的哪些规定为什么

论述推进以改善民生为重点的社会建设的具体措施。