-Oh,dear!I'vejustbrokenawindow. A: _____.Itcan'tbehelped. B: Don'tworry C: Allright D: That'sfine E: Notatall

Youlookniceinwhite.（） A: Thankyou B: No,Iamfarfromit. C: Don'tmentionit D: Notatall

Youlookniceinwhite.（） A: Thankyou  B: No,Iamfarfromit. C: Don'tmentionit  D: Notatall

短语（）可用于表示感谢。 A: sorry B: notatall C: thankyou D: hello

---Howiseverythinggoinginthehospital,dear? A: I’mallright,thanks B: Nottoobad,Iguess C: Notatall D: That’sallright,thankyou

Kate:What’sthatonyourdesk?<br/>Jack:<spanstyle="text-decoration:underline"><spanstyle="text-decoration:underline"></span>1</span><spanstyle="text-decoration:underline"><spanstyle="text-decoration:underline"></span></span>It’saknife.<br/>Kate:<spanstyle="text-decoration:underline"><spanstyle="text-decoration:underline"></span>2</span><spanstyle="text-decoration:underline"><spanstyle="text-decoration:underline"></span></span><br/>Jack:It’spink.<br/>Kate:Isityours?<br/>Jack:<spanstyle="text-decoration:underline"><spanstyle="text-decoration:underline"></span>3</span><spanstyle="text-decoration:underline"><spanstyle="text-decoration:underline"></span></span>IsitSusan’s?<br/>Kate:Let’sgoandaskher.<br/>Jack:Hi,Susan.Isthisyourknife?<br/>Susan:Oh,yes,itismine.<br/>Jack:<spanstyle="text-decoration:underline"><spanstyle="text-decoration:underline"></span>4</span><spanstyle="text-decoration:underline"><spanstyle="text-decoration:underline"></span></span><br/>Susan:Thanksalot.<br/>Jack:<spanstyle="text-decoration:underline"><spanstyle="text-decoration:underline"></span>5</span><spanstyle="text-decoration:underline"><spanstyle="text-decoration:underline"></span></span><br/>A．Whoseknifeisit?<br/>B．Letmesee.<br/>C．No,myknifeisgreen.<br/>D．Yes,itismine.<br/>E．Notatall.<br/>F．Hereyouare.<br/>G．Whatcolourisit?

氢原子轨道的能级高低是 A: E(1s)<E(2s)<E(2p)<E(3s)<E(3p)<E(3d)<E(4s) B: E(1s)<E(2s)<E(2p)<E(3s)<E(3p)<E(4s)<E(3d) C: E(1s)<E(2s)=E(2p)<E(3s)=E(3p)<E(4s)<E(3d) D: E(1s)<E(2s)=E(2p)<E(3s)=E(3p)=E(3d)<E(4s)

E→ E + E | E - E | E * E | E / E | ( E ) | i 下面的推导过程是句子i+i*i的规范推导的是: E=>E*E=>E*i=>E+E*i=>E+i*i=>i+i*i|E=>E*E=>E*i=>E+E*i=>i+E*i=>i+i*i|E=>E+E=>E+E*E=>E+E*i=>E+i*i=>i+i*i|E=>E+E=>E+E*E=>E+i*E=>E+i*i=>i+i*i

下列情况中，属于饱和状态的是（ ）。 A: E≠e B: E＞e C: E=e D: E＜e

一维、二维、三维k空间中，能级密度Z(E)与能量E之间的关系分别对应满足( ) A: Z(E)=常数、Z(E)∝√E、Z(E)∝１／√E B: Z(E)∝√E、Z(E)=常数、Z(E)∝１／√E C: Z(E)∝√E、Z(E)∝１／√E、Z(E)=常数 D: Z(E)∝１／√Z(E)=常数、Z(E) ∝√E