Part One (paras 1-9):On ________ Day 1943, as a young ________ at sea, the writer came up with the idea of expressing his ________ to people who had helped him before.

Part Two (paras 10-16):The writer wrote ________ thank-you letters to his ________, the Rev. Nelson and his ________ respectively.

Part Three （para 13-21）Einstein’s discoveries were attributable to _________________.

A. His imagination and questioning.
B. His disregard for authority.
C. His powers of concentration.
D. His interest in science.

Part One (para 1-3)A young husband and father, Albert Einstein had to work hard to _____________.

Part two (para 4-12)Einstein made astonishing achievements and thus ______________ physics.

Part Four (para 22-23)It was proved that Einstein was not a ______________.

Part One (paras 1-3):In America, the era of leaving the front door ___________ has drawn to a close.

Part Two (paras 4-15)A new atmosphere of _______________ has crept into every aspect of daily life. As a result, ____________(安全设备), in varied forms, are put to use.

Part Three (paras 16-19)In locking our fears out, we become ____________ of our own making.

Part Four (paras 24-26):The writer wishes everyone to find the ________ and ________ it.