短文改错。

Last winter vacation,some of my classmates decide to

                                                            1._________

travel with their friends, while I chose to take part-time

job                                                        2._________

to gain experience and earn some money. I learn from

my                                                         3._________

teacher that a nearby company was looking after students

                                                             4.__________

with good handwriting to write addresses on envelope. The

                                                              5._________

pay were 10 cents per envelope. I headed for the company,

                                                             6.__________

feeling sure l would easy finish 300 envelopes in five hours

and                                                       7._________

to earn the money. Actually,I only finished 200. Now, I

                                                             8.__________

fully understand how hard is to earn money. Getting out

                                                             9.__________

of the classroom is indeed necessary for we all.

                                                              10._________

大树移植防腐促根技术，促根可用一些促进根系生长的植物激素，如（）等促根的激素和药剂对土球的外围和整个土球进行喷洒处理，以促进不定根的发生和生长。

A.奈乙酸（NAA)

B.吲哚丁酸（IBA)

C.脱落酸（ABA)

D.ABT生根粉