填空。____

《史记·秦始皇本纪》记载：“侯生卢生相与谋曰：‘……天下之事无小大皆决于上，   上至以衡石量书，日夜有呈定量，不中呈不完成定量不得休息。贪于权势至如此，未可为求仙药。’”从中我们能得出的结论是（   ）

①臣民对秦始皇独断专权不满   ②秦始皇十分勤于政事

③秦始皇欲求仙药想长生不老   ④秦始皇统一了度量衡

2014年8月7日，湖北省高级人民法院对刘汉、刘维上诉案依法公开宣判，维持一审对刘汉、刘维的死刑判决。此案的宣判，有力维护了市场秩序和人民群众生命财产安全。上诉人的亲属、媒体记者、专家学者及各界群众200余人旁听了宣判。

语法填空

    ____ is well known, optimism(乐观)plays an important role in one's life. Although we are facing many difficulties, we should keep optimistic. Optimism is a mental(精神的)attitude or world view and it means expecting ____ best possible result from any given situation.

    I did ____ (poor) in English in the past, but I never gave up struggling(搏斗). All my families, teachers and friends encouraged ____ (I) and they taught me a lot of ____ (use) ways of learning English. I ____ (keep) practicing as they told me to do. I listened to English news and songs and I read interesting English stories. At weekends, watching some English movies was another good way to make my English better. ____difficulties I came across, I tried my best to work them out. I believe in myself, ____ (believe) that hard work would finally pay off. Gradually, I make progress in my English. Nowadays, I can remember English words ____ (easy) and use them freely when communicating with foreigners.

    Thanks to optimism, I have become one of the top English ____ (learn) in my school now.

△ABC中，若$\overrightarrow{AD}=2\overrightarrow{DB}$，$\overrightarrow{CD}=\frac{1}{3}\overrightarrow{CA}+\lambda \overrightarrow{CB}$，则$\lambda$=(   )